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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 12:24:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 12:24:03 -0700
commitf632a8170a6b667ee4e3f552087588f0fe13c4bb (patch)
tree9fbdd3505f1471364265727dea1bc9d034cbed8f /drivers
parentef8f3d48afd6a17a0dae8c277c2f539c2f19fd16 (diff)
parentc33d442328f556460b79aba6058adb37bb555389 (diff)
Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and debugfs updates from Greg KH: "Here is the "big" driver core and debugfs changes for 5.3-rc1 It's a lot of different patches, all across the tree due to some api changes and lots of debugfs cleanups. Other than the debugfs cleanups, in this set of changes we have: - bus iteration function cleanups - scripts/get_abi.pl tool to display and parse Documentation/ABI entries in a simple way - cleanups to Documenatation/ABI/ entries to make them parse easier due to typos and other minor things - default_attrs use for some ktype users - driver model documentation file conversions to .rst - compressed firmware file loading - deferred probe fixes All of these have been in linux-next for a while, with a bunch of merge issues that Stephen has been patient with me for" * tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits) debugfs: make error message a bit more verbose orangefs: fix build warning from debugfs cleanup patch ubifs: fix build warning after debugfs cleanup patch driver: core: Allow subsystems to continue deferring probe drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT arch_topology: Remove error messages on out-of-memory conditions lib: notifier-error-inject: no need to check return value of debugfs_create functions swiotlb: no need to check return value of debugfs_create functions ceph: no need to check return value of debugfs_create functions sunrpc: no need to check return value of debugfs_create functions ubifs: no need to check return value of debugfs_create functions orangefs: no need to check return value of debugfs_create functions nfsd: no need to check return value of debugfs_create functions lib: 842: no need to check return value of debugfs_create functions debugfs: provide pr_fmt() macro debugfs: log errors when something goes wrong drivers: s390/cio: Fix compilation warning about const qualifiers drivers: Add generic helper to match by of_node driver_find_device: Unify the match function with class_find_device() bus_find_device: Unify the match callback with class_find_device ...
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/acpi_lpss.c4
-rw-r--r--drivers/acpi/utils.c11
-rw-r--r--drivers/amba/tegra-ahb.c4
-rw-r--r--drivers/base/arch_topology.c5
-rw-r--r--drivers/base/bus.c6
-rw-r--r--drivers/base/cacheinfo.c3
-rw-r--r--drivers/base/core.c6
-rw-r--r--drivers/base/dd.c55
-rw-r--r--drivers/base/devcon.c2
-rw-r--r--drivers/base/driver.c4
-rw-r--r--drivers/base/firmware_loader/Kconfig18
-rw-r--r--drivers/base/firmware_loader/fallback.c65
-rw-r--r--drivers/base/firmware_loader/firmware.h16
-rw-r--r--drivers/base/firmware_loader/main.c224
-rw-r--r--drivers/base/node.c5
-rw-r--r--drivers/base/platform.c2
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c8
-rw-r--r--drivers/char/ipmi/ipmi_si_platform.c2
-rw-r--r--drivers/firmware/arm_scmi/common.h2
-rw-r--r--drivers/firmware/efi/dev-path-parser.c4
-rw-r--r--drivers/firmware/ti_sci.h2
-rw-r--r--drivers/fpga/of-fpga-region.c7
-rw-r--r--drivers/gpio/gpio-cs5535.c2
-rw-r--r--drivers/gpu/drm/drm_mipi_dsi.c2
-rw-r--r--drivers/gpu/drm/tegra/dc.c4
-rw-r--r--drivers/hwtracing/coresight/coresight-cpu-debug.c15
-rw-r--r--drivers/hwtracing/coresight/coresight-platform.c2
-rw-r--r--drivers/hwtracing/coresight/coresight.c6
-rw-r--r--drivers/hwtracing/intel_th/core.c5
-rw-r--r--drivers/i2c/busses/i2c-amd-mp2-pci.c2
-rw-r--r--drivers/i2c/i2c-core-acpi.c4
-rw-r--r--drivers/i2c/i2c-core-of.c4
-rw-r--r--drivers/iio/inkern.c2
-rw-r--r--drivers/infiniband/hw/hns/hns_roce_hw_v1.c2
-rw-r--r--drivers/iommu/arm-smmu-v3.c2
-rw-r--r--drivers/iommu/arm-smmu.c2
-rw-r--r--drivers/mailbox/bcm-flexrm-mailbox.c28
-rw-r--r--drivers/mailbox/bcm-pdc-mailbox.c8
-rw-r--r--drivers/mfd/altera-sysmgr.c4
-rw-r--r--drivers/mfd/syscon.c21
-rw-r--r--drivers/misc/cxl/cxl.h15
-rw-r--r--drivers/misc/cxl/debugfs.c36
-rw-r--r--drivers/misc/genwqe/card_base.c5
-rw-r--r--drivers/misc/genwqe/card_base.h2
-rw-r--r--drivers/misc/genwqe/card_debugfs.c165
-rw-r--r--drivers/misc/genwqe/card_dev.c6
-rw-r--r--drivers/misc/lkdtm/core.c15
-rw-r--r--drivers/misc/mei/debugfs.c47
-rw-r--r--drivers/misc/mei/main.c8
-rw-r--r--drivers/misc/mei/mei_dev.h7
-rw-r--r--drivers/misc/mic/card/mic_debugfs.c18
-rw-r--r--drivers/misc/mic/cosm/cosm_debugfs.c4
-rw-r--r--drivers/misc/mic/host/mic_debugfs.c4
-rw-r--r--drivers/misc/mic/scif/scif_debugfs.c5
-rw-r--r--drivers/misc/mic/vop/vop_debugfs.c4
-rw-r--r--drivers/misc/ti-st/st_kim.c4
-rw-r--r--drivers/misc/vmw_balloon.c20
-rw-r--r--drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c2
-rw-r--r--drivers/net/ethernet/intel/ice/ice_main.c2
-rw-r--r--drivers/net/ethernet/ti/cpsw-phy-sel.c4
-rw-r--r--drivers/net/ethernet/ti/davinci_emac.c2
-rw-r--r--drivers/net/ethernet/toshiba/tc35815.c4
-rw-r--r--drivers/nvmem/core.c2
-rw-r--r--drivers/of/of_mdio.c2
-rw-r--r--drivers/of/platform.c2
-rw-r--r--drivers/pci/probe.c2
-rw-r--r--drivers/pci/search.c4
-rw-r--r--drivers/pinctrl/devicetree.c7
-rw-r--r--drivers/s390/cio/ccwgroup.c6
-rw-r--r--drivers/s390/cio/chsc_sch.c2
-rw-r--r--drivers/s390/cio/css.c4
-rw-r--r--drivers/s390/cio/device.c10
-rw-r--r--drivers/s390/cio/scm.c4
-rw-r--r--drivers/s390/crypto/ap_bus.c8
-rw-r--r--drivers/s390/crypto/vfio_ap_ops.c2
-rw-r--r--drivers/scsi/scsi_proc.c2
-rw-r--r--drivers/spi/spi.c4
-rw-r--r--drivers/staging/most/core.c9
-rw-r--r--drivers/thermal/broadcom/bcm2835_thermal.c2
-rw-r--r--drivers/thermal/intel/intel_powerclamp.c12
-rw-r--r--drivers/thermal/intel/x86_pkg_temp_thermal.c25
-rw-r--r--drivers/thermal/tegra/soctherm.c14
-rw-r--r--drivers/thunderbolt/switch.c4
-rw-r--r--drivers/usb/core/devio.c4
-rw-r--r--drivers/usb/core/usb.c4
-rw-r--r--drivers/usb/phy/phy-am335x-control.c4
-rw-r--r--drivers/usb/phy/phy-isp1301.c4
-rw-r--r--drivers/visorbus/visorbus_main.c4
-rw-r--r--drivers/watchdog/bcm_kona_wdt.c14
-rw-r--r--drivers/watchdog/mei_wdt.c30
90 files changed, 502 insertions, 638 deletions
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 398451839178..d696f165a50e 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -508,10 +508,10 @@ struct hid_uid {
const char *uid;
};
-static int match_hid_uid(struct device *dev, void *data)
+static int match_hid_uid(struct device *dev, const void *data)
{
struct acpi_device *adev = ACPI_COMPANION(dev);
- struct hid_uid *id = data;
+ const struct hid_uid *id = data;
if (!adev)
return 0;
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 7def63ab00c0..e3974a8f8fd4 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -725,17 +725,15 @@ bool acpi_dev_found(const char *hid)
EXPORT_SYMBOL(acpi_dev_found);
struct acpi_dev_match_info {
- const char *dev_name;
- struct acpi_device *adev;
struct acpi_device_id hid[2];
const char *uid;
s64 hrv;
};
-static int acpi_dev_match_cb(struct device *dev, void *data)
+static int acpi_dev_match_cb(struct device *dev, const void *data)
{
struct acpi_device *adev = to_acpi_device(dev);
- struct acpi_dev_match_info *match = data;
+ const struct acpi_dev_match_info *match = data;
unsigned long long hrv;
acpi_status status;
@@ -746,9 +744,6 @@ static int acpi_dev_match_cb(struct device *dev, void *data)
strcmp(adev->pnp.unique_id, match->uid)))
return 0;
- match->dev_name = acpi_dev_name(adev);
- match->adev = adev;
-
if (match->hrv == -1)
return 1;
@@ -818,7 +813,7 @@ acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv)
match.hrv = hrv;
dev = bus_find_device(&acpi_bus_type, NULL, &match, acpi_dev_match_cb);
- return dev ? match.adev : NULL;
+ return dev ? to_acpi_device(dev) : NULL;
}
EXPORT_SYMBOL(acpi_dev_get_first_match_dev);
diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index 3eaa459ae057..aa64eece77a6 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -134,10 +134,10 @@ static inline void gizmo_writel(struct tegra_ahb *ahb, u32 value, u32 offset)
}
#ifdef CONFIG_TEGRA_IOMMU_SMMU
-static int tegra_ahb_match_by_smmu(struct device *dev, void *data)
+static int tegra_ahb_match_by_smmu(struct device *dev, const void *data)
{
struct tegra_ahb *ahb = dev_get_drvdata(dev);
- struct device_node *dn = data;
+ const struct device_node *dn = data;
return (ahb->dev->of_node == dn) ? 1 : 0;
}
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 9b09e31ae82f..63c1e76739f1 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -137,7 +137,6 @@ bool __init topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu)
sizeof(*raw_capacity),
GFP_KERNEL);
if (!raw_capacity) {
- pr_err("cpu_capacity: failed to allocate memory for raw capacities\n");
cap_parsing_failed = true;
return false;
}
@@ -217,10 +216,8 @@ static int __init register_cpufreq_notifier(void)
if (!acpi_disabled || !raw_capacity)
return -EINVAL;
- if (!alloc_cpumask_var(&cpus_to_visit, GFP_KERNEL)) {
- pr_err("cpu_capacity: failed to allocate memory for cpus_to_visit\n");
+ if (!alloc_cpumask_var(&cpus_to_visit, GFP_KERNEL))
return -ENOMEM;
- }
cpumask_copy(cpus_to_visit, cpu_possible_mask);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 0a58e969f8b7..df3cac739813 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -323,8 +323,8 @@ EXPORT_SYMBOL_GPL(bus_for_each_dev);
* return to the caller and not iterate over any more devices.
*/
struct device *bus_find_device(struct bus_type *bus,
- struct device *start, void *data,
- int (*match)(struct device *dev, void *data))
+ struct device *start, const void *data,
+ int (*match)(struct device *dev, const void *data))
{
struct klist_iter i;
struct device *dev;
@@ -342,7 +342,7 @@ struct device *bus_find_device(struct bus_type *bus,
}
EXPORT_SYMBOL_GPL(bus_find_device);
-static int match_name(struct device *dev, void *data)
+static int match_name(struct device *dev, const void *data)
{
const char *name = data;
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index 8827c60f51e2..8d553c92cd32 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -660,7 +660,8 @@ static int cacheinfo_cpu_pre_down(unsigned int cpu)
static int __init cacheinfo_sysfs_init(void)
{
- return cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "base/cacheinfo:online",
+ return cpuhp_setup_state(CPUHP_AP_BASE_CACHEINFO_ONLINE,
+ "base/cacheinfo:online",
cacheinfo_cpu_online, cacheinfo_cpu_pre_down);
}
device_initcall(cacheinfo_sysfs_init);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index b4c64528f13c..da84a73f2ba6 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -3356,3 +3356,9 @@ void device_set_of_node_from_dev(struct device *dev, const struct device *dev2)
dev->of_node_reused = true;
}
EXPORT_SYMBOL_GPL(device_set_of_node_from_dev);
+
+int device_match_of_node(struct device *dev, const void *np)
+{
+ return dev->of_node == np;
+}
+EXPORT_SYMBOL_GPL(device_match_of_node);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 0df9b4461766..994a90747420 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -235,6 +235,19 @@ static int __init deferred_probe_timeout_setup(char *str)
}
__setup("deferred_probe_timeout=", deferred_probe_timeout_setup);
+static int __driver_deferred_probe_check_state(struct device *dev)
+{
+ if (!initcalls_done)
+ return -EPROBE_DEFER;
+
+ if (!deferred_probe_timeout) {
+ dev_WARN(dev, "deferred probe timeout, ignoring dependency");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
/**
* driver_deferred_probe_check_state() - Check deferred probe state
* @dev: device to check
@@ -248,14 +261,40 @@ __setup("deferred_probe_timeout=", deferred_probe_timeout_setup);
*/
int driver_deferred_probe_check_state(struct device *dev)
{
- if (initcalls_done) {
- if (!deferred_probe_timeout) {
- dev_WARN(dev, "deferred probe timeout, ignoring dependency");
- return -ETIMEDOUT;
- }
- dev_warn(dev, "ignoring dependency for device, assuming no driver");
- return -ENODEV;
- }
+ int ret;
+
+ ret = __driver_deferred_probe_check_state(dev);
+ if (ret < 0)
+ return ret;
+
+ dev_warn(dev, "ignoring dependency for device, assuming no driver");
+
+ return -ENODEV;
+}
+
+/**
+ * driver_deferred_probe_check_state_continue() - check deferred probe state
+ * @dev: device to check
+ *
+ * Returns -ETIMEDOUT if deferred probe debug timeout has expired, or
+ * -EPROBE_DEFER otherwise.
+ *
+ * Drivers or subsystems can opt-in to calling this function instead of
+ * directly returning -EPROBE_DEFER.
+ *
+ * This is similar to driver_deferred_probe_check_state(), but it allows the
+ * subsystem to keep deferring probe after built-in drivers have had a chance
+ * to probe. One scenario where that is useful is if built-in drivers rely on
+ * resources that are provided by modular drivers.
+ */
+int driver_deferred_probe_check_state_continue(struct device *dev)
+{
+ int ret;
+
+ ret = __driver_deferred_probe_check_state(dev);
+ if (ret < 0)
+ return ret;
+
return -EPROBE_DEFER;
}
diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c
index f7035fc12b92..09f28479b243 100644
--- a/drivers/base/devcon.c
+++ b/drivers/base/devcon.c
@@ -133,7 +133,7 @@ static struct bus_type *generic_match_buses[] = {
NULL,
};
-static int device_fwnode_match(struct device *dev, void *fwnode)
+static int device_fwnode_match(struct device *dev, const void *fwnode)
{
return dev_fwnode(dev) == fwnode;
}
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 857c8f1b876e..4e5ca632f35e 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -73,8 +73,8 @@ EXPORT_SYMBOL_GPL(driver_for_each_device);
* return to the caller and not iterate over any more devices.
*/
struct device *driver_find_device(struct device_driver *drv,
- struct device *start, void *data,
- int (*match)(struct device *dev, void *data))
+ struct device *start, const void *data,
+ int (*match)(struct device *dev, const void *data))
{
struct klist_iter i;
struct device *dev;
diff --git a/drivers/base/firmware_loader/Kconfig b/drivers/base/firmware_loader/Kconfig
index 38f2da6f5c2b..3f9e274e2ed3 100644
--- a/drivers/base/firmware_loader/Kconfig
+++ b/drivers/base/firmware_loader/Kconfig
@@ -26,6 +26,9 @@ config FW_LOADER
if FW_LOADER
+config FW_LOADER_PAGED_BUF
+ bool
+
config EXTRA_FIRMWARE
string "Build named firmware blobs into the kernel binary"
help
@@ -67,6 +70,7 @@ config EXTRA_FIRMWARE_DIR
config FW_LOADER_USER_HELPER
bool "Enable the firmware sysfs fallback mechanism"
+ select FW_LOADER_PAGED_BUF
help
This option enables a sysfs loading facility to enable firmware
loading to the kernel through userspace as a fallback mechanism
@@ -151,5 +155,19 @@ config FW_LOADER_USER_HELPER_FALLBACK
If you are unsure about this, say N here.
+config FW_LOADER_COMPRESS
+ bool "Enable compressed firmware support"
+ select FW_LOADER_PAGED_BUF
+ select XZ_DEC
+ help
+ This option enables the support for loading compressed firmware
+ files. The caller of firmware API receives the decompressed file
+ content. The compressed file is loaded as a fallback, only after
+ loading the raw file failed at first.
+
+ Currently only XZ-compressed files are supported, and they have to
+ be compressed with either none or crc32 integrity check type (pass
+ "-C crc32" option to xz command).
+
endif # FW_LOADER
endmenu
diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c
index f962488546b6..62ee90b4db56 100644
--- a/drivers/base/firmware_loader/fallback.c
+++ b/drivers/base/firmware_loader/fallback.c
@@ -219,20 +219,6 @@ static ssize_t firmware_loading_show(struct device *dev,
return sprintf(buf, "%d\n", loading);
}
-/* one pages buffer should be mapped/unmapped only once */
-static int map_fw_priv_pages(struct fw_priv *fw_priv)
-{
- if (!fw_priv->is_paged_buf)
- return 0;
-
- vunmap(fw_priv->data);
- fw_priv->data = vmap(fw_priv->pages, fw_priv->nr_pages, 0,
- PAGE_KERNEL_RO);
- if (!fw_priv->data)
- return -ENOMEM;
- return 0;
-}
-
/**
* firmware_loading_store() - set value in the 'loading' control file
* @dev: device pointer
@@ -254,7 +240,6 @@ static ssize_t firmware_loading_store(struct device *dev,
struct fw_priv *fw_priv;
ssize_t written = count;
int loading = simple_strtol(buf, NULL, 10);
- int i;
mutex_lock(&fw_lock);
fw_priv = fw_sysfs->fw_priv;
@@ -265,12 +250,7 @@ static ssize_t firmware_loading_store(struct device *dev,
case 1:
/* discarding any previous partial load */
if (!fw_sysfs_done(fw_priv)) {
- for (i = 0; i < fw_priv->nr_pages; i++)
- __free_page(fw_priv->pages[i]);
- vfree(fw_priv->pages);
- fw_priv->pages = NULL;
- fw_priv->page_array_size = 0;
- fw_priv->nr_pages = 0;
+ fw_free_paged_buf(fw_priv);
fw_state_start(fw_priv);
}
break;
@@ -284,7 +264,7 @@ static ssize_t firmware_loading_store(struct device *dev,
* see the mapped 'buf->data' once the loading
* is completed.
* */
- rc = map_fw_priv_pages(fw_priv);
+ rc = fw_map_paged_buf(fw_priv);
if (rc)
dev_err(dev, "%s: map pages failed\n",
__func__);
@@ -389,40 +369,13 @@ out:
static int fw_realloc_pages(struct fw_sysfs *fw_sysfs, int min_size)
{
- struct fw_priv *fw_priv= fw_sysfs->fw_priv;
- int pages_needed = PAGE_ALIGN(min_size) >> PAGE_SHIFT;
-
- /* If the array of pages is too small, grow it... */
- if (fw_priv->page_array_size < pages_needed) {
- int new_array_size = max(pages_needed,
- fw_priv->page_array_size * 2);
- struct page **new_pages;
+ int err;
- new_pages = vmalloc(array_size(new_array_size, sizeof(void *)));
- if (!new_pages) {
- fw_load_abort(fw_sysfs);
- return -ENOMEM;
- }
- memcpy(new_pages, fw_priv->pages,
- fw_priv->page_array_size * sizeof(void *));
- memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) *
- (new_array_size - fw_priv->page_array_size));
- vfree(fw_priv->pages);
- fw_priv->pages = new_pages;
- fw_priv->page_array_size = new_array_size;
- }
-
- while (fw_priv->nr_pages < pages_needed) {
- fw_priv->pages[fw_priv->nr_pages] =
- alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
-
- if (!fw_priv->pages[fw_priv->nr_pages]) {
- fw_load_abort(fw_sysfs);
- return -ENOMEM;
- }
- fw_priv->nr_pages++;
- }
- return 0;
+ err = fw_grow_paged_buf(fw_sysfs->fw_priv,
+ PAGE_ALIGN(min_size) >> PAGE_SHIFT);
+ if (err)
+ fw_load_abort(fw_sysfs);
+ return err;
}
/**
@@ -659,7 +612,7 @@ static bool fw_run_sysfs_fallback(enum fw_opt opt_flags)
/* Also permit LSMs and IMA to fail firmware sysfs fallback */
ret = security_kernel_load_data(LOADING_FIRMWARE);
if (ret < 0)
- return ret;
+ return false;
return fw_force_sysfs_fallback(opt_flags);
}
diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h
index 4c1395f8e7ed..7048a41973ed 100644
--- a/drivers/base/firmware_loader/firmware.h
+++ b/drivers/base/firmware_loader/firmware.h
@@ -64,12 +64,14 @@ struct fw_priv {
void *data;
size_t size;
size_t allocated_size;
-#ifdef CONFIG_FW_LOADER_USER_HELPER
+#ifdef CONFIG_FW_LOADER_PAGED_BUF
bool is_paged_buf;
- bool need_uevent;
struct page **pages;
int nr_pages;
int page_array_size;
+#endif
+#ifdef CONFIG_FW_LOADER_USER_HELPER
+ bool need_uevent;
struct list_head pending_list;
#endif
const char *fw_name;
@@ -133,4 +135,14 @@ static inline void fw_state_done(struct fw_priv *fw_priv)
int assign_fw(struct firmware *fw, struct device *device,
enum fw_opt opt_flags);
+#ifdef CONFIG_FW_LOADER_PAGED_BUF
+void fw_free_paged_buf(struct fw_priv *fw_priv);
+int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed);
+int fw_map_paged_buf(struct fw_priv *fw_priv);
+#else
+static inline void fw_free_paged_buf(struct fw_priv *fw_priv) {}
+int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed) { return -ENXIO; }
+int fw_map_paged_buf(struct fw_priv *fw_priv) { return -ENXIO; }
+#endif
+
#endif /* __FIRMWARE_LOADER_H */
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index 7eaaf5ee5ba6..bf44c79beae9 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -33,6 +33,7 @@
#include <linux/syscore_ops.h>
#include <linux/reboot.h>
#include <linux/security.h>
+#include <linux/xz.h>
#include <generated/utsrelease.h>
@@ -251,15 +252,7 @@ static void __free_fw_priv(struct kref *ref)
list_del(&fw_priv->list);
spin_unlock(&fwc->lock);
-#ifdef CONFIG_FW_LOADER_USER_HELPER
- if (fw_priv->is_paged_buf) {
- int i;
- vunmap(fw_priv->data);
- for (i = 0; i < fw_priv->nr_pages; i++)
- __free_page(fw_priv->pages[i]);
- vfree(fw_priv->pages);
- } else
-#endif
+ fw_free_paged_buf(fw_priv); /* free leftover pages */
if (!fw_priv->allocated_size)
vfree(fw_priv->data);
kfree_const(fw_priv->fw_name);
@@ -274,6 +267,174 @@ static void free_fw_priv(struct fw_priv *fw_priv)
spin_unlock(&fwc->lock);
}
+#ifdef CONFIG_FW_LOADER_PAGED_BUF
+void fw_free_paged_buf(struct fw_priv *fw_priv)
+{
+ int i;
+
+ if (!fw_priv->pages)
+ return;
+
+ for (i = 0; i < fw_priv->nr_pages; i++)
+ __free_page(fw_priv->pages[i]);
+ kvfree(fw_priv->pages);
+ fw_priv->pages = NULL;
+ fw_priv->page_array_size = 0;
+ fw_priv->nr_pages = 0;
+}
+
+int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed)
+{
+ /* If the array of pages is too small, grow it */
+ if (fw_priv->page_array_size < pages_needed) {
+ int new_array_size = max(pages_needed,
+ fw_priv->page_array_size * 2);
+ struct page **new_pages;
+
+ new_pages = kvmalloc_array(new_array_size, sizeof(void *),
+ GFP_KERNEL);
+ if (!new_pages)
+ return -ENOMEM;
+ memcpy(new_pages, fw_priv->pages,
+ fw_priv->page_array_size * sizeof(void *));
+ memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) *
+ (new_array_size - fw_priv->page_array_size));
+ kvfree(fw_priv->pages);
+ fw_priv->pages = new_pages;
+ fw_priv->page_array_size = new_array_size;
+ }
+
+ while (fw_priv->nr_pages < pages_needed) {
+ fw_priv->pages[fw_priv->nr_pages] =
+ alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
+
+ if (!fw_priv->pages[fw_priv->nr_pages])
+ return -ENOMEM;
+ fw_priv->nr_pages++;
+ }
+
+ return 0;
+}
+
+int fw_map_paged_buf(struct fw_priv *fw_priv)
+{
+ /* one pages buffer should be mapped/unmapped only once */
+ if (!fw_priv->pages)
+ return 0;
+
+ vunmap(fw_priv->data);
+ fw_priv->data = vmap(fw_priv->pages, fw_priv->nr_pages, 0,
+ PAGE_KERNEL_RO);
+ if (!fw_priv->data)
+ return -ENOMEM;
+
+ /* page table is no longer needed after mapping, let's free */
+ kvfree(fw_priv->pages);
+ fw_priv->pages = NULL;
+
+ return 0;
+}
+#endif
+
+/*
+ * XZ-compressed firmware support
+ */
+#ifdef CONFIG_FW_LOADER_COMPRESS
+/* show an error and return the standard error code */
+static int fw_decompress_xz_error(struct device *dev, enum xz_ret xz_ret)
+{
+ if (xz_ret != XZ_STREAM_END) {
+ dev_warn(dev, "xz decompression failed (xz_ret=%d)\n", xz_ret);
+ return xz_ret == XZ_MEM_ERROR ? -ENOMEM : -EINVAL;
+ }
+ return 0;
+}
+
+/* single-shot decompression onto the pre-allocated buffer */
+static int fw_decompress_xz_single(struct device *dev, struct fw_priv *fw_priv,
+ size_t in_size, const void *in_buffer)
+{
+ struct xz_dec *xz_dec;
+ struct xz_buf xz_buf;
+ enum xz_ret xz_ret;
+
+ xz_dec = xz_dec_init(XZ_SINGLE, (u32)-1);
+ if (!xz_dec)
+ return -ENOMEM;
+
+ xz_buf.in_size = in_size;
+ xz_buf.in = in_buffer;
+ xz_buf.in_pos = 0;
+ xz_buf.out_size = fw_priv->allocated_size;
+ xz_buf.out = fw_priv->data;
+ xz_buf.out_pos = 0;
+
+ xz_ret = xz_dec_run(xz_dec, &xz_buf);
+ xz_dec_end(xz_dec);
+
+ fw_priv->size = xz_buf.out_pos;
+ return fw_decompress_xz_error(dev, xz_ret);
+}
+
+/* decompression on paged buffer and map it */
+static int fw_decompress_xz_pages(struct device *dev, struct fw_priv *fw_priv,
+ size_t in_size, const void *in_buffer)
+{
+ struct xz_dec *xz_dec;
+ struct xz_buf xz_buf;
+ enum xz_ret xz_ret;
+ struct page *page;
+ int err = 0;
+
+ xz_dec = xz_dec_init(XZ_DYNALLOC, (u32)-1);
+ if (!xz_dec)
+ return -ENOMEM;
+
+ xz_buf.in_size = in_size;
+ xz_buf.in = in_buffer;
+ xz_buf.in_pos = 0;
+
+ fw_priv->is_paged_buf = true;
+ fw_priv->size = 0;
+ do {
+ if (fw_grow_paged_buf(fw_priv, fw_priv->nr_pages + 1)) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* decompress onto the new allocated page */
+ page = fw_priv->pages[fw_priv->nr_pages - 1];
+ xz_buf.out = kmap(page);
+ xz_buf.out_pos = 0;
+ xz_buf.out_size = PAGE_SIZE;
+ xz_ret = xz_dec_run(xz_dec, &xz_buf);
+ kunmap(page);
+ fw_priv->size += xz_buf.out_pos;
+ /* partial decompression means either end or error */
+ if (xz_buf.out_pos != PAGE_SIZE)
+ break;
+ } while (xz_ret == XZ_OK);
+
+ err = fw_decompress_xz_error(dev, xz_ret);
+ if (!err)
+ err = fw_map_paged_buf(fw_priv);
+
+ out:
+ xz_dec_end(xz_dec);
+ return err;
+}
+
+static int fw_decompress_xz(struct device *dev, struct fw_priv *fw_priv,
+ size_t in_size, const void *in_buffer)
+{
+ /* if the buffer is pre-allocated, we can perform in single-shot mode */
+ if (fw_priv->data)
+ return fw_decompress_xz_single(dev, fw_priv, in_size, in_buffer);
+ else
+ return fw_decompress_xz_pages(dev, fw_priv, in_size, in_buffer);
+}
+#endif /* CONFIG_FW_LOADER_COMPRESS */
+
/* direct firmware loading support */
static char fw_path_para[256];
static const char * const fw_path[] = {
@@ -293,7 +454,12 @@ module_param_string(path, fw_path_para, sizeof(fw_path_para), 0644);
MODULE_PARM_DESC(path, "customized firmware image search path with a higher priority than default path");
static int
-fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv)
+fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv,
+ const char *suffix,
+ int (*decompress)(struct device *dev,
+ struct fw_priv *fw_priv,
+ size_t in_size,
+ const void *in_buffer))
{
loff_t size;
int i, len;
@@ -301,9 +467,11 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv)
char *path;
enum kernel_read_file_id id = READING_FIRMWARE;
size_t msize = INT_MAX;
+ void *buffer = NULL;
/* Already populated data member means we're loading into a buffer */
- if (fw_priv->data) {
+ if (!decompress && fw_priv->data) {
+ buffer = fw_priv->data;
id = READING_FIRMWARE_PREALLOC_BUFFER;
msize = fw_priv->allocated_size;
}
@@ -317,15 +485,15 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv)
if (!fw_path[i][0])
continue;
- len = snprintf(path, PATH_MAX, "%s/%s",
- fw_path[i], fw_priv->fw_name);
+ len = snprintf(path, PATH_MAX, "%s/%s%s",
+ fw_path[i], fw_priv->fw_name, suffix);
if (len >= PATH_MAX) {
rc = -ENAMETOOLONG;
break;
}
fw_priv->size = 0;
- rc = kernel_read_file_from_path(path, &fw_priv->data, &size,
+ rc = kernel_read_file_from_path(path, &buffer, &size,
msize, id);
if (rc) {
if (rc != -ENOENT)
@@ -336,8 +504,24 @@ fw_get_filesystem_firmware(struct device *device, struct fw_priv *fw_priv)
path);
continue;
}
- dev_dbg(device, "direct-loading %s\n", fw_priv->fw_name);
- fw_priv->size = size;
+ if (decompress) {
+ dev_dbg(device, "f/w decompressing %s\n",
+ fw_priv->fw_name);
+ rc = decompress(device, fw_priv, size, buffer);
+ /* discard the superfluous original content */
+ vfree(buffer);
+ buffer = NULL;
+ if (rc) {
+ fw_free_paged_buf(fw_priv);
+ continue;
+ }
+ } else {
+ dev_dbg(device, "direct-loading %s\n",
+ fw_priv->fw_name);
+ if (!fw_priv->data)
+ fw_priv->data = buffer;
+ fw_priv->size = size;
+ }
fw_state_done(fw_priv);
break;
}
@@ -584,7 +768,13 @@ _request_firmware(const struct firmware **firmware_p, const char *name,
if (ret <= 0) /* error or already assigned */
goto out;
- ret = fw_get_filesystem_firmware(device, fw->priv);
+ ret = fw_get_filesystem_firmware(device, fw->priv, "", NULL);
+#ifdef CONFIG_FW_LOADER_COMPRESS
+ if (ret == -ENOENT)
+ ret = fw_get_filesystem_firmware(device, fw->priv, ".xz",
+ fw_decompress_xz);
+#endif
+
if (ret) {
if (!(opt_flags & FW_OPT_NO_WARN))
dev_warn(device,
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 8598fcbd2a17..aa878fbcf705 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -66,6 +66,7 @@ static DEVICE_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL);
* @dev: Device for this memory access class
* @list_node: List element in the node's access list
* @access: The access class rank
+ * @hmem_attrs: Heterogeneous memory performance attributes
*/
struct node_access_nodes {
struct device dev;
@@ -673,8 +674,8 @@ int register_cpu_under_node(unsigned int cpu, unsigned int nid)
/**
* register_memory_node_under_compute_node - link memory node to its compute
* node for a given access class.
- * @mem_node: Memory node number
- * @cpu_node: Cpu node number
+ * @mem_nid: Memory node number
+ * @cpu_nid: Cpu node number
* @access: Access class to register
*
* Description:
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 4d1729853d1a..713903290385 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -5,7 +5,7 @@
* Copyright (c) 2002-3 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
*
- * Please see Documentation/driver-model/platform.txt for more
+ * Please see Documentation/driver-model/platform.rst for more
* information.
*/
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 1dc10740fc0f..6707659cffd6 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2819,9 +2819,9 @@ static const struct device_type bmc_device_type = {
.groups = bmc_dev_attr_groups,
};
-static int __find_bmc_guid(struct device *dev, void *data)
+static int __find_bmc_guid(struct device *dev, const void *data)
{
- guid_t *guid = data;
+ const guid_t *guid = data;
struct bmc_device *bmc;
int rv;
@@ -2857,9 +2857,9 @@ struct prod_dev_id {
unsigned char device_id;
};
-static int __find_bmc_prod_dev_id(struct device *dev, void *data)
+static int __find_bmc_prod_dev_id(struct device *dev, const void *data)
{
- struct prod_dev_id *cid = data;
+ const struct prod_dev_id *cid = data;
struct bmc_device *bmc;
int rv;
diff --git a/drivers/char/ipmi/ipmi_si_platform.c b/drivers/char/ipmi/ipmi_si_platform.c
index f2a91c4d8cab..fd94c4238449 100644
--- a/drivers/char/ipmi/ipmi_si_platform.c
+++ b/drivers/char/ipmi/ipmi_si_platform.c
@@ -426,7 +426,7 @@ static int ipmi_remove(struct platform_device *pdev)
return ipmi_si_remove_by_dev(&pdev->dev);
}
-static int pdev_match_name(struct device *dev, void *data)
+static int pdev_match_name(struct device *dev, const void *data)
{
struct platform_device *pdev = to_platform_device(dev);
const char *name = data;
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index 937a930ce87d..44fd4f9404a9 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* System Control and Management Interface (SCMI) Message Protocol
* driver common header file containing some definitions, structures
diff --git a/drivers/firmware/efi/dev-path-parser.c b/drivers/firmware/efi/dev-path-parser.c
index 85ec99f97841..20123384271c 100644
--- a/drivers/firmware/efi/dev-path-parser.c
+++ b/drivers/firmware/efi/dev-path-parser.c
@@ -17,9 +17,9 @@ struct acpi_hid_uid {
char uid[11]; /* UINT_MAX + null byte */
};
-static int __init match_acpi_dev(struct device *dev, void *data)
+static int __init match_acpi_dev(struct device *dev, const void *data)
{
- struct acpi_hid_uid hid_uid = *(struct acpi_hid_uid *)data;
+ struct acpi_hid_uid hid_uid = *(const struct acpi_hid_uid *)data;
struct acpi_device *adev = to_acpi_device(dev);
if (acpi_match_device_ids(adev, hid_uid.hid))
diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h
index 4983827151bf..adbeeefaca92 100644
--- a/drivers/firmware/ti_sci.h
+++ b/drivers/firmware/ti_sci.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: BSD-3-Clause
+/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Texas Instruments System Control Interface (TISCI) Protocol
*
diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
index 75f64abf9c81..e405309baadc 100644
--- a/drivers/fpga/of-fpga-region.c
+++ b/drivers/fpga/of-fpga-region.c
@@ -22,11 +22,6 @@ static const struct of_device_id fpga_region_of_match[] = {
};
MODULE_DEVICE_TABLE(of, fpga_region_of_match);
-static int fpga_region_of_node_match(struct device *dev, const void *data)
-{
- return dev->of_node == data;
-}
-
/**
* of_fpga_region_find - find FPGA region
* @np: device node of FPGA Region
@@ -37,7 +32,7 @@ static int fpga_region_of_node_match(struct device *dev, const void *data)
*/
static struct fpga_region *of_fpga_region_find(struct device_node *np)
{
- return fpga_region_class_find(NULL, np, fpga_region_of_node_match);
+ return fpga_region_class_find(NULL, np, device_match_of_node);
}
/**
diff --git a/drivers/gpio/gpio-cs5535.c b/drivers/gpio/gpio-cs5535.c
index 6314225dbed0..3611a0571667 100644
--- a/drivers/gpio/gpio-cs5535.c
+++ b/drivers/gpio/gpio-cs5535.c
@@ -41,7 +41,7 @@ MODULE_PARM_DESC(mask, "GPIO channel mask.");
/*
* FIXME: convert this singleton driver to use the state container
- * design pattern, see Documentation/driver-model/design-patterns.txt
+ * design pattern, see Documentation/driver-model/design-patterns.rst
*/
static struct cs5535_gpio_chip {
struct gpio_chip chip;
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 80b75501f5c6..ad19df0686c9 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -93,7 +93,7 @@ static struct bus_type mipi_dsi_bus_type = {
.pm = &mipi_dsi_device_pm_ops,
};
-static int of_device_match(struct device *dev, void *data)
+static int of_device_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 826b3f047c0c..cf25f183c4a7 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2372,10 +2372,10 @@ static int tegra_dc_parse_dt(struct tegra_dc *dc)
return 0;
}
-static int tegra_dc_match_by_pipe(struct device *dev, void *data)
+static int tegra_dc_match_by_pipe(struct device *dev, const void *data)
{
struct tegra_dc *dc = dev_get_drvdata(dev);
- unsigned int pipe = (unsigned long)data;
+ unsigned int pipe = (unsigned long)(void *)data;
return dc->pipe == pipe;
}
diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c
index 58bfd6319f65..2463aa7ab4f6 100644
--- a/drivers/hwtracing/coresight/coresight-cpu-debug.c
+++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c
@@ -525,23 +525,12 @@ static const struct file_operations debug_func_knob_fops = {
static int debug_func_init(void)
{
- struct dentry *file;
int ret;
/* Create debugfs node */
debug_debugfs_dir = debugfs_create_dir("coresight_cpu_debug", NULL);
- if (!debug_debugfs_dir) {
- pr_err("%s: unable to create debugfs directory\n", __func__);
- return -ENOMEM;
- }
-
- file = debugfs_create_file("enable", 0644, debug_debugfs_dir, NULL,
- &debug_func_knob_fops);
- if (!file) {
- pr_err("%s: unable to create enable knob file\n", __func__);
- ret = -ENOMEM;
- goto err;
- }
+ debugfs_create_file("enable", 0644, debug_debugfs_dir, NULL,
+ &debug_func_knob_fops);
/* Register function to be called for panic */
ret = atomic_notifier_chain_register(&panic_notifier_list,
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index cf580ffbc27c..dad7d96c5943 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -37,7 +37,7 @@ static int coresight_alloc_conns(struct device *dev,
return 0;
}
-int coresight_device_fwnode_match(struct device *dev, void *fwnode)
+int coresight_device_fwnode_match(struct device *dev, const void *fwnode)
{
return dev_fwnode(dev) == fwnode;
}
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 86d1fc2c1bd4..55db77f6410b 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -498,9 +498,9 @@ struct coresight_device *coresight_get_sink(struct list_head *path)
return csdev;
}
-static int coresight_enabled_sink(struct device *dev, void *data)
+static int coresight_enabled_sink(struct device *dev, const void *data)
{
- bool *reset = data;
+ const bool *reset = data;
struct coresight_device *csdev = to_coresight_device(dev);
if ((csdev->type == CORESIGHT_DEV_TYPE_SINK ||
@@ -544,7 +544,7 @@ struct coresight_device *coresight_get_enabled_sink(bool deactivate)
return dev ? to_coresight_device(dev) : NULL;
}
-static int coresight_sink_by_id(struct device *dev, void *data)
+static int coresight_sink_by_id(struct device *dev, const void *data)
{
struct coresight_device *csdev = to_coresight_device(dev);
unsigned long hash;
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
index 033dce563c99..55922896d862 100644
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -789,10 +789,9 @@ static int intel_th_populate(struct intel_th *th)
return 0;
}
-static int match_devt(struct device *dev, void *data)
+static int match_devt(struct device *dev, const void *data)
{
- dev_t devt = (dev_t)(unsigned long)data;
-
+ dev_t devt = (dev_t)(unsigned long)(void *)data;
return dev->devt == devt;
}
diff --git a/drivers/i2c/busses/i2c-amd-mp2-pci.c b/drivers/i2c/busses/i2c-amd-mp2-pci.c
index 455e1f36a2a3..c7fe3b44a860 100644
--- a/drivers/i2c/busses/i2c-amd-mp2-pci.c
+++ b/drivers/i2c/busses/i2c-amd-mp2-pci.c
@@ -457,7 +457,7 @@ static struct pci_driver amd_mp2_pci_driver = {
};
module_pci_driver(amd_mp2_pci_driver);
-static int amd_mp2_device_match(struct device *dev, void *data)
+static int amd_mp2_device_match(struct device *dev, const void *data)
{
return 1;
}
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 1969bfdfe6a4..428a82c3a35f 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -320,7 +320,7 @@ u32 i2c_acpi_find_bus_speed(struct device *dev)
}
EXPORT_SYMBOL_GPL(i2c_acpi_find_bus_speed);
-static int i2c_acpi_find_match_adapter(struct device *dev, void *data)
+static int i2c_acpi_find_match_adapter(struct device *dev, const void *data)
{
struct i2c_adapter *adapter = i2c_verify_adapter(dev);
@@ -330,7 +330,7 @@ static int i2c_acpi_find_match_adapter(struct device *dev, void *data)
return ACPI_HANDLE(dev) == (acpi_handle)data;
}
-static int i2c_acpi_find_match_device(struct device *dev, void *data)
+static int i2c_acpi_find_match_device(struct device *dev, const void *data)
{
return ACPI_COMPANION(dev) == data;
}
diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
index 406e5f695a7e..2eb59a260ad4 100644
--- a/drivers/i2c/i2c-core-of.c
+++ b/drivers/i2c/i2c-core-of.c
@@ -112,12 +112,12 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
of_node_put(bus);
}
-static int of_dev_node_match(struct device *dev, void *data)
+static int of_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
-static int of_dev_or_parent_node_match(struct device *dev, void *data)
+static int of_dev_or_parent_node_match(struct device *dev, const void *data)
{
if (dev->of_node == data)
return 1;
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 2fb2314548e9..5a8351c9a426 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -90,7 +90,7 @@ static const struct iio_chan_spec
#ifdef CONFIG_OF
-static int iio_dev_node_match(struct device *dev, void *data)
+static int iio_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data && dev->type == &iio_device_type;
}
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index e068a02122f5..3afd3e9330e7 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -4498,7 +4498,7 @@ static const struct acpi_device_id hns_roce_acpi_match[] = {
};
MODULE_DEVICE_TABLE(acpi, hns_roce_acpi_match);
-static int hns_roce_node_match(struct device *dev, void *fwnode)
+static int hns_roce_node_match(struct device *dev, const void *fwnode)
{
return dev->fwnode == fwnode;
}
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 2d96cf0023dd..a9a9fabd3968 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -2034,7 +2034,7 @@ arm_smmu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova)
static struct platform_driver arm_smmu_driver;
-static int arm_smmu_match_node(struct device *dev, void *data)
+static int arm_smmu_match_node(struct device *dev, const void *data)
{
return dev->fwnode == data;
}
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 653b6b3dcafb..64977c131ee6 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1426,7 +1426,7 @@ static bool arm_smmu_capable(enum iommu_cap cap)
}
}
-static int arm_smmu_match_node(struct device *dev, void *data)
+static int arm_smmu_match_node(struct device *dev, const void *data)
{
return dev->fwnode == data;
}
diff --git a/drivers/mailbox/bcm-flexrm-mailbox.c b/drivers/mailbox/bcm-flexrm-mailbox.c
index a64116586b4c..43b336316fde 100644
--- a/drivers/mailbox/bcm-flexrm-mailbox.c
+++ b/drivers/mailbox/bcm-flexrm-mailbox.c
@@ -296,8 +296,6 @@ struct flexrm_mbox {
struct dma_pool *bd_pool;
struct dma_pool *cmpl_pool;
struct dentry *root;
- struct dentry *config;
- struct dentry *stats;
struct mbox_controller controller;
};
@@ -1603,7 +1601,6 @@ static int flexrm_mbox_probe(struct platform_device *pdev)
1 << RING_CMPL_ALIGN_ORDER, 0);
if (!mbox->cmpl_pool) {
ret = -ENOMEM;
- goto fail_destroy_bd_pool;
}
/* Allocate platform MSIs for each ring */
@@ -1624,28 +1621,15 @@ static int flexrm_mbox_probe(struct platform_device *pdev)
/* Create debugfs root entry */
mbox->root = debugfs_create_dir(dev_name(mbox->dev), NULL);
- if (IS_ERR_OR_NULL(mbox->root)) {
- ret = PTR_ERR_OR_ZERO(mbox->root);
- goto fail_free_msis;
- }
/* Create debugfs config entry */
- mbox->config = debugfs_create_devm_seqfile(mbox->dev,
- "config", mbox->root,
- flexrm_debugfs_conf_show);
- if (IS_ERR_OR_NULL(mbox->config)) {
- ret = PTR_ERR_OR_ZERO(mbox->config);
- goto fail_free_debugfs_root;
- }
+ debugfs_create_devm_seqfile(mbox->dev, "config", mbox->root,
+ flexrm_debugfs_conf_show);
/* Create debugfs stats entry */
- mbox->stats = debugfs_create_devm_seqfile(mbox->dev,
- "stats", mbox->root,
- flexrm_debugfs_stats_show);
- if (IS_ERR_OR_NULL(mbox->stats)) {
- ret = PTR_ERR_OR_ZERO(mbox->stats);
- goto fail_free_debugfs_root;
- }
+ debugfs_create_devm_seqfile(mbox->dev, "stats", mbox->root,
+ flexrm_debugfs_stats_show);
+
skip_debugfs:
/* Initialize mailbox controller */
@@ -1676,11 +1660,9 @@ skip_debugfs:
fail_free_debugfs_root:
debugfs_remove_recursive(mbox->root);
-fail_free_msis:
platform_msi_domain_free_irqs(dev);
fail_destroy_cmpl_pool:
dma_pool_destroy(mbox->cmpl_pool);
-fail_destroy_bd_pool:
dma_pool_destroy(mbox->bd_pool);
fail:
return ret;
diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c
index 8513c42f7091..fcb3b18a0678 100644
--- a/drivers/mailbox/bcm-pdc-mailbox.c
+++ b/drivers/mailbox/bcm-pdc-mailbox.c
@@ -395,8 +395,6 @@ struct pdc_state {
*/
struct scatterlist *src_sg[PDC_RING_ENTRIES];
- struct dentry *debugfs_stats; /* debug FS stats file for this PDC */
-
/* counters */
u32 pdc_requests; /* number of request messages submitted */
u32 pdc_replies; /* number of reply messages received */
@@ -501,9 +499,8 @@ static void pdc_setup_debugfs(struct pdc_state *pdcs)
debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
/* S_IRUSR == 0400 */
- pdcs->debugfs_stats = debugfs_create_file(spu_stats_name, 0400,
- debugfs_dir, pdcs,
- &pdc_debugfs_stats);
+ debugfs_create_file(spu_stats_name, 0400, debugfs_dir, pdcs,
+ &pdc_debugfs_stats);
}
static void pdc_free_debugfs(void)
@@ -1603,7 +1600,6 @@ static int pdc_probe(struct platform_device *pdev)
if (err)
goto cleanup_buf_pool;
- pdcs->debugfs_stats = NULL;
pdc_setup_debugfs(pdcs);
dev_dbg(dev, "pdc_probe() successful");
diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c
index 8976f82785bb..2ee14d8a6d31 100644
--- a/drivers/mfd/altera-sysmgr.c
+++ b/drivers/mfd/altera-sysmgr.c
@@ -92,9 +92,9 @@ static struct regmap_config altr_sysmgr_regmap_cfg = {
* Matching function used by driver_find_device().
* Return: True if match is found, otherwise false.
*/
-static int sysmgr_match_phandle(struct device *dev, void *data)
+static int sysmgr_match_phandle(struct device *dev, const void *data)
{
- return dev->of_node == (struct device_node *)data;
+ return dev->of_node == (const struct device_node *)data;
}
/**
diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index 8ce1e41d632c..b65e585fc8c6 100644
--- a/drivers/mfd/syscon.c
+++ b/drivers/mfd/syscon.c
@@ -190,27 +190,6 @@ struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
}
EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_compatible);
-static int syscon_match_pdevname(struct device *dev, void *data)
-{
- return !strcmp(dev_name(dev), (const char *)data);
-}
-
-struct regmap *syscon_regmap_lookup_by_pdevname(const char *s)
-{
- struct device *dev;
- struct syscon *syscon;
-
- dev = driver_find_device(&syscon_driver.driver, NULL, (void *)s,
- syscon_match_pdevname);
- if (!dev)
- return ERR_PTR(-EPROBE_DEFER);
-
- syscon = dev_get_drvdata(dev);
-
- return syscon->regmap;
-}
-EXPORT_SYMBOL_GPL(syscon_regmap_lookup_by_pdevname);
-
struct regmap *syscon_regmap_lookup_by_phandle(struct device_node *np,
const char *property)
{
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index a73c9e669d78..5dc0f6093f9d 100644
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -908,11 +908,11 @@ void cxl_update_dedicated_ivtes_psl8(struct cxl_context *ctx);
#ifdef CONFIG_DEBUG_FS
-int cxl_debugfs_init(void);
+void cxl_debugfs_init(void);
void cxl_debugfs_exit(void);
-int cxl_debugfs_adapter_add(struct cxl *adapter);
+void cxl_debugfs_adapter_add(struct cxl *adapter);
void cxl_debugfs_adapter_remove(struct cxl *adapter);
-int cxl_debugfs_afu_add(struct cxl_afu *afu);
+void cxl_debugfs_afu_add(struct cxl_afu *afu);
void cxl_debugfs_afu_remove(struct cxl_afu *afu);
void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir);
void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir);
@@ -921,27 +921,24 @@ void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir);
#else /* CONFIG_DEBUG_FS */
-static inline int __init cxl_debugfs_init(void)
+static inline void __init cxl_debugfs_init(void)
{
- return 0;
}
static inline void cxl_debugfs_exit(void)
{
}
-static inline int cxl_debugfs_adapter_add(struct cxl *adapter)
+static inline void cxl_debugfs_adapter_add(struct cxl *adapter)
{
- return 0;
}
static inline void cxl_debugfs_adapter_remove(struct cxl *adapter)
{
}
-static inline int cxl_debugfs_afu_add(struct cxl_afu *afu)
+static inline void cxl_debugfs_afu_add(struct cxl_afu *afu)
{
- return 0;
}
static inline void cxl_debugfs_afu_remove(struct cxl_afu *afu)
diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c
index 1fda22c24c93..7b987bf498b5 100644
--- a/drivers/misc/cxl/debugfs.c
+++ b/drivers/misc/cxl/debugfs.c
@@ -26,11 +26,11 @@ static int debugfs_io_u64_set(void *data, u64 val)
DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set,
"0x%016llx\n");
-static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode,
- struct dentry *parent, u64 __iomem *value)
+static void debugfs_create_io_x64(const char *name, umode_t mode,
+ struct dentry *parent, u64 __iomem *value)
{
- return debugfs_create_file_unsafe(name, mode, parent,
- (void __force *)value, &fops_io_x64);
+ debugfs_create_file_unsafe(name, mode, parent, (void __force *)value,
+ &fops_io_x64);
}
void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir)
@@ -54,25 +54,22 @@ void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir)
debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE));
}
-int cxl_debugfs_adapter_add(struct cxl *adapter)
+void cxl_debugfs_adapter_add(struct cxl *adapter)
{
struct dentry *dir;
char buf[32];
if (!cxl_debugfs)
- return -ENODEV;
+ return;
snprintf(buf, 32, "card%i", adapter->adapter_num);
dir = debugfs_create_dir(buf, cxl_debugfs);
- if (IS_ERR(dir))
- return PTR_ERR(dir);
adapter->debugfs = dir;
debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE));
if (adapter->native->sl_ops->debugfs_add_adapter_regs)
adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir);
- return 0;
}
void cxl_debugfs_adapter_remove(struct cxl *adapter)
@@ -96,18 +93,16 @@ void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir)
debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE));
}
-int cxl_debugfs_afu_add(struct cxl_afu *afu)
+void cxl_debugfs_afu_add(struct cxl_afu *afu)
{
struct dentry *dir;
char buf[32];
if (!afu->adapter->debugfs)
- return -ENODEV;
+ return;
snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice);
dir = debugfs_create_dir(buf, afu->adapter->debugfs);
- if (IS_ERR(dir))
- return PTR_ERR(dir);
afu->debugfs = dir;
debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An));
@@ -118,8 +113,6 @@ int cxl_debugfs_afu_add(struct cxl_afu *afu)
if (afu->adapter->native->sl_ops->debugfs_add_afu_regs)
afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir);
-
- return 0;
}
void cxl_debugfs_afu_remove(struct cxl_afu *afu)
@@ -127,19 +120,12 @@ void cxl_debugfs_afu_remove(struct cxl_afu *afu)
debugfs_remove_recursive(afu->debugfs);
}
-int __init cxl_debugfs_init(void)
+void __init cxl_debugfs_init(void)
{
- struct dentry *ent;
-
if (!cpu_has_feature(CPU_FTR_HVMODE))
- return 0;
-
- ent = debugfs_create_dir("cxl", NULL);
- if (IS_ERR(ent))
- return PTR_ERR(ent);
- cxl_debugfs = ent;
+ return;
- return 0;
+ cxl_debugfs = debugfs_create_dir("cxl", NULL);
}
void cxl_debugfs_exit(void)
diff --git a/drivers/misc/genwqe/card_base.c b/drivers/misc/genwqe/card_base.c
index ab7f2cd21c93..1dc6c7c5cbce 100644
--- a/drivers/misc/genwqe/card_base.c
+++ b/drivers/misc/genwqe/card_base.c
@@ -1369,10 +1369,6 @@ static int __init genwqe_init_module(void)
class_genwqe->devnode = genwqe_devnode;
debugfs_genwqe = debugfs_create_dir(GENWQE_DEVNAME, NULL);
- if (!debugfs_genwqe) {
- rc = -ENOMEM;
- goto err_out;
- }
rc = pci_register_driver(&genwqe_driver);
if (rc != 0) {
@@ -1384,7 +1380,6 @@ static int __init genwqe_init_module(void)
err_out0:
debugfs_remove(debugfs_genwqe);
- err_out:
class_destroy(class_genwqe);
return rc;
}
diff --git a/drivers/misc/genwqe/card_base.h b/drivers/misc/genwqe/card_base.h
index 2f6dd2f37942..0e902977d35f 100644
--- a/drivers/misc/genwqe/card_base.h
+++ b/drivers/misc/genwqe/card_base.h
@@ -437,7 +437,7 @@ int genwqe_device_create(struct genwqe_dev *cd);
int genwqe_device_remove(struct genwqe_dev *cd);
/* debugfs */
-int genwqe_init_debugfs(struct genwqe_dev *cd);
+void genwqe_init_debugfs(struct genwqe_dev *cd);
void genqwe_exit_debugfs(struct genwqe_dev *cd);
int genwqe_read_softreset(struct genwqe_dev *cd);
diff --git a/drivers/misc/genwqe/card_debugfs.c b/drivers/misc/genwqe/card_debugfs.c
index 49c945d0c488..1b5b82e65268 100644
--- a/drivers/misc/genwqe/card_debugfs.c
+++ b/drivers/misc/genwqe/card_debugfs.c
@@ -316,11 +316,9 @@ static int info_show(struct seq_file *s, void *unused)
DEFINE_SHOW_ATTRIBUTE(info);
-int genwqe_init_debugfs(struct genwqe_dev *cd)
+void genwqe_init_debugfs(struct genwqe_dev *cd)
{
struct dentry *root;
- struct dentry *file;
- int ret;
char card_name[64];
char name[64];
unsigned int i;
@@ -328,153 +326,50 @@ int genwqe_init_debugfs(struct genwqe_dev *cd)
sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx);
root = debugfs_create_dir(card_name, cd->debugfs_genwqe);
- if (!root) {
- ret = -ENOMEM;
- goto err0;
- }
/* non privileged interfaces are done here */
- file = debugfs_create_file("ddcb_info", S_IRUGO, root, cd,
- &ddcb_info_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("info", S_IRUGO, root, cd,
- &info_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_u32("ddcb_software_timeout", 0666, root,
- &cd->ddcb_software_timeout);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_u32("kill_timeout", 0666, root,
- &cd->kill_timeout);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
+ debugfs_create_file("ddcb_info", S_IRUGO, root, cd, &ddcb_info_fops);
+ debugfs_create_file("info", S_IRUGO, root, cd, &info_fops);
+ debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
+ debugfs_create_u32("ddcb_software_timeout", 0666, root,
+ &cd->ddcb_software_timeout);
+ debugfs_create_u32("kill_timeout", 0666, root, &cd->kill_timeout);
/* privileged interfaces follow here */
if (!genwqe_is_privileged(cd)) {
cd->debugfs_root = root;
- return 0;
+ return;
}
- file = debugfs_create_file("curr_regs", S_IRUGO, root, cd,
- &curr_regs_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
- &curr_dbg_uid0_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
- &curr_dbg_uid1_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
- &curr_dbg_uid2_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("prev_regs", S_IRUGO, root, cd,
- &prev_regs_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
- &prev_dbg_uid0_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
- &prev_dbg_uid1_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
- &prev_dbg_uid2_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
+ debugfs_create_file("curr_regs", S_IRUGO, root, cd, &curr_regs_fops);
+ debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
+ &curr_dbg_uid0_fops);
+ debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
+ &curr_dbg_uid1_fops);
+ debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
+ &curr_dbg_uid2_fops);
+ debugfs_create_file("prev_regs", S_IRUGO, root, cd, &prev_regs_fops);
+ debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
+ &prev_dbg_uid0_fops);
+ debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
+ &prev_dbg_uid1_fops);
+ debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
+ &prev_dbg_uid2_fops);
for (i = 0; i < GENWQE_MAX_VFS; i++) {
sprintf(name, "vf%u_jobtimeout_msec", i);
-
- file = debugfs_create_u32(name, 0666, root,
- &cd->vf_jobtimeout_msec[i]);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
+ debugfs_create_u32(name, 0666, root,
+ &cd->vf_jobtimeout_msec[i]);
}
- file = debugfs_create_file("jobtimer", S_IRUGO, root, cd,
- &jtimer_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
- &queue_working_time_fops);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_u32("skip_recovery", 0666, root,
- &cd->skip_recovery);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
-
- file = debugfs_create_u32("use_platform_recovery", 0666, root,
- &cd->use_platform_recovery);
- if (!file) {
- ret = -ENOMEM;
- goto err1;
- }
+ debugfs_create_file("jobtimer", S_IRUGO, root, cd, &jtimer_fops);
+ debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
+ &queue_working_time_fops);
+ debugfs_create_u32("skip_recovery", 0666, root, &cd->skip_recovery);
+ debugfs_create_u32("use_platform_recovery", 0666, root,
+ &cd->use_platform_recovery);
cd->debugfs_root = root;
- return 0;
-err1:
- debugfs_remove_recursive(root);
-err0:
- return ret;
}
void genqwe_exit_debugfs(struct genwqe_dev *cd)
diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c
index 3bc51f19c734..0e34c0568fed 100644
--- a/drivers/misc/genwqe/card_dev.c
+++ b/drivers/misc/genwqe/card_dev.c
@@ -1301,14 +1301,10 @@ int genwqe_device_create(struct genwqe_dev *cd)
goto err_cdev;
}
- rc = genwqe_init_debugfs(cd);
- if (rc != 0)
- goto err_debugfs;
+ genwqe_init_debugfs(cd);
return 0;
- err_debugfs:
- device_destroy(cd->class_genwqe, cd->devnum_genwqe);
err_cdev:
cdev_del(&cd->cdev_genwqe);
err_add:
diff --git a/drivers/misc/lkdtm/core.c b/drivers/misc/lkdtm/core.c
index e9767bdcdb44..66ae6b2a6950 100644
--- a/drivers/misc/lkdtm/core.c
+++ b/drivers/misc/lkdtm/core.c
@@ -391,7 +391,7 @@ static int __init lkdtm_module_init(void)
{
struct crashpoint *crashpoint = NULL;
const struct crashtype *crashtype = NULL;
- int ret = -EINVAL;
+ int ret;
int i;
/* Neither or both of these need to be set */
@@ -434,22 +434,13 @@ static int __init lkdtm_module_init(void)
/* Register debugfs interface */
lkdtm_debugfs_root = debugfs_create_dir("provoke-crash", NULL);
- if (!lkdtm_debugfs_root) {
- pr_err("creating root dir failed\n");
- return -ENODEV;
- }
/* Install debugfs trigger files. */
for (i = 0; i < ARRAY_SIZE(crashpoints); i++) {
struct crashpoint *cur = &crashpoints[i];
- struct dentry *de;
- de = debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root,
- cur, &cur->fops);
- if (de == NULL) {
- pr_err("could not create crashpoint %s\n", cur->name);
- goto out_err;
- }
+ debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root, cur,
+ &cur->fops);
}
/* Install crashpoint if one was selected. */
diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c
index 47cfd5005e1b..a26c716c61a1 100644
--- a/drivers/misc/mei/debugfs.c
+++ b/drivers/misc/mei/debugfs.c
@@ -154,46 +154,21 @@ void mei_dbgfs_deregister(struct mei_device *dev)
*
* @dev: the mei device structure
* @name: the mei device name
- *
- * Return: 0 on success, <0 on failure.
*/
-int mei_dbgfs_register(struct mei_device *dev, const char *name)
+void mei_dbgfs_register(struct mei_device *dev, const char *name)
{
- struct dentry *dir, *f;
+ struct dentry *dir;
dir = debugfs_create_dir(name, NULL);
- if (!dir)
- return -ENOMEM;
-
dev->dbgfs_dir = dir;
- f = debugfs_create_file("meclients", S_IRUSR, dir,
- dev, &mei_dbgfs_meclients_fops);
- if (!f) {
- dev_err(dev->dev, "meclients: registration failed\n");
- goto err;
- }
- f = debugfs_create_file("active", S_IRUSR, dir,
- dev, &mei_dbgfs_active_fops);
- if (!f) {
- dev_err(dev->dev, "active: registration failed\n");
- goto err;
- }
- f = debugfs_create_file("devstate", S_IRUSR, dir,
- dev, &mei_dbgfs_devstate_fops);
- if (!f) {
- dev_err(dev->dev, "devstate: registration failed\n");
- goto err;
- }
- f = debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir,
- &dev->allow_fixed_address,
- &mei_dbgfs_allow_fa_fops);
- if (!f) {
- dev_err(dev->dev, "allow_fixed_address: registration failed\n");
- goto err;
- }
- return 0;
-err:
- mei_dbgfs_deregister(dev);
- return -ENODEV;
+ debugfs_create_file("meclients", S_IRUSR, dir, dev,
+ &mei_dbgfs_meclients_fops);
+ debugfs_create_file("active", S_IRUSR, dir, dev,
+ &mei_dbgfs_active_fops);
+ debugfs_create_file("devstate", S_IRUSR, dir, dev,
+ &mei_dbgfs_devstate_fops);
+ debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir,
+ &dev->allow_fixed_address,
+ &mei_dbgfs_allow_fa_fops);
}
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index ad02097d7fee..f894d1f8a53e 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -984,16 +984,10 @@ int mei_register(struct mei_device *dev, struct device *parent)
goto err_dev_create;
}
- ret = mei_dbgfs_register(dev, dev_name(clsdev));
- if (ret) {
- dev_err(clsdev, "cannot register debugfs ret = %d\n", ret);
- goto err_dev_dbgfs;
- }
+ mei_dbgfs_register(dev, dev_name(clsdev));
return 0;
-err_dev_dbgfs:
- device_destroy(mei_class, devno);
err_dev_create:
cdev_del(&dev->cdev);
err_dev_add:
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index fca832fcac57..f71a023aed3c 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -718,13 +718,10 @@ bool mei_hbuf_acquire(struct mei_device *dev);
bool mei_write_is_idle(struct mei_device *dev);
#if IS_ENABLED(CONFIG_DEBUG_FS)
-int mei_dbgfs_register(struct mei_device *dev, const char *name);
+void mei_dbgfs_register(struct mei_device *dev, const char *name);
void mei_dbgfs_deregister(struct mei_device *dev);
#else
-static inline int mei_dbgfs_register(struct mei_device *dev, const char *name)
-{
- return 0;
-}
+static inline void mei_dbgfs_register(struct mei_device *dev, const char *name) {}
static inline void mei_dbgfs_deregister(struct mei_device *dev) {}
#endif /* CONFIG_DEBUG_FS */
diff --git a/drivers/misc/mic/card/mic_debugfs.c b/drivers/misc/mic/card/mic_debugfs.c
index bf7a60ccc66c..3ee3d2402634 100644
--- a/drivers/misc/mic/card/mic_debugfs.c
+++ b/drivers/misc/mic/card/mic_debugfs.c
@@ -51,25 +51,13 @@ DEFINE_SHOW_ATTRIBUTE(mic_intr);
*/
void __init mic_create_card_debug_dir(struct mic_driver *mdrv)
{
- struct dentry *d;
-
if (!mic_dbg)
return;
mdrv->dbg_dir = debugfs_create_dir(mdrv->name, mic_dbg);
- if (!mdrv->dbg_dir) {
- dev_err(mdrv->dev, "Cant create dbg_dir %s\n", mdrv->name);
- return;
- }
-
- d = debugfs_create_file("intr_test", 0444, mdrv->dbg_dir,
- mdrv, &mic_intr_fops);
- if (!d) {
- dev_err(mdrv->dev,
- "Cant create dbg intr_test %s\n", mdrv->name);
- return;
- }
+ debugfs_create_file("intr_test", 0444, mdrv->dbg_dir, mdrv,
+ &mic_intr_fops);
}
/**
@@ -89,8 +77,6 @@ void mic_delete_card_debug_dir(struct mic_driver *mdrv)
void __init mic_init_card_debugfs(void)
{
mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
- if (!mic_dbg)
- pr_err("can't create debugfs dir\n");
}
/**
diff --git a/drivers/misc/mic/cosm/cosm_debugfs.c b/drivers/misc/mic/cosm/cosm_debugfs.c
index 8e3f4589f16d..2fc9f4bf7001 100644
--- a/drivers/misc/mic/cosm/cosm_debugfs.c
+++ b/drivers/misc/mic/cosm/cosm_debugfs.c
@@ -93,8 +93,6 @@ void cosm_create_debug_dir(struct cosm_device *cdev)
scnprintf(name, sizeof(name), "mic%d", cdev->index);
cdev->dbg_dir = debugfs_create_dir(name, cosm_dbg);
- if (!cdev->dbg_dir)
- return;
debugfs_create_file("log_buf", 0444, cdev->dbg_dir, cdev,
&log_buf_fops);
@@ -113,8 +111,6 @@ void cosm_delete_debug_dir(struct cosm_device *cdev)
void cosm_init_debugfs(void)
{
cosm_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
- if (!cosm_dbg)
- pr_err("can't create debugfs dir\n");
}
void cosm_exit_debugfs(void)
diff --git a/drivers/misc/mic/host/mic_debugfs.c b/drivers/misc/mic/host/mic_debugfs.c
index 7ef8efe9552f..8a8e41677501 100644
--- a/drivers/misc/mic/host/mic_debugfs.c
+++ b/drivers/misc/mic/host/mic_debugfs.c
@@ -113,8 +113,6 @@ void mic_create_debug_dir(struct mic_device *mdev)
scnprintf(name, sizeof(name), "mic%d", mdev->id);
mdev->dbg_dir = debugfs_create_dir(name, mic_dbg);
- if (!mdev->dbg_dir)
- return;
debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev,
&mic_smpt_fops);
@@ -143,8 +141,6 @@ void mic_delete_debug_dir(struct mic_device *mdev)
void __init mic_init_debugfs(void)
{
mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
- if (!mic_dbg)
- pr_err("can't create debugfs dir\n");
}
/**
diff --git a/drivers/misc/mic/scif/scif_debugfs.c b/drivers/misc/mic/scif/scif_debugfs.c
index a6820480105a..8fe38e7ca6e6 100644
--- a/drivers/misc/mic/scif/scif_debugfs.c
+++ b/drivers/misc/mic/scif/scif_debugfs.c
@@ -103,11 +103,6 @@ DEFINE_SHOW_ATTRIBUTE(scif_rma);
void __init scif_init_debugfs(void)
{
scif_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
- if (!scif_dbg) {
- dev_err(scif_info.mdev.this_device,
- "can't create debugfs dir scif\n");
- return;
- }
debugfs_create_file("scif_dev", 0444, scif_dbg, NULL, &scif_dev_fops);
debugfs_create_file("scif_rma", 0444, scif_dbg, NULL, &scif_rma_fops);
diff --git a/drivers/misc/mic/vop/vop_debugfs.c b/drivers/misc/mic/vop/vop_debugfs.c
index ed59cd75e182..9d4f175f4dd1 100644
--- a/drivers/misc/mic/vop/vop_debugfs.c
+++ b/drivers/misc/mic/vop/vop_debugfs.c
@@ -174,10 +174,6 @@ void vop_init_debugfs(struct vop_info *vi)
snprintf(name, sizeof(name), "%s%d", KBUILD_MODNAME, vi->vpdev->dnode);
vi->dbg = debugfs_create_dir(name, NULL);
- if (!vi->dbg) {
- pr_err("can't create debugfs dir vop\n");
- return;
- }
debugfs_create_file("dp", 0444, vi->dbg, vi, &vop_dp_fops);
debugfs_create_file("vdev_info", 0444, vi->dbg, vi, &vop_vdev_info_fops);
}
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 18ca938b86e6..a36ed1ff5967 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -748,10 +748,6 @@ static int kim_probe(struct platform_device *pdev)
pr_info("sysfs entries created\n");
kim_debugfs_dir = debugfs_create_dir("ti-st", NULL);
- if (!kim_debugfs_dir) {
- pr_err(" debugfs entries creation failed ");
- return 0;
- }
debugfs_create_file("version", S_IRUGO, kim_debugfs_dir,
kim_gdata, &version_fops);
diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index 043eed845246..97b58e7ad901 100644
--- a/drivers/misc/vmw_balloon.c
+++ b/drivers/misc/vmw_balloon.c
@@ -1699,19 +1699,10 @@ static int vmballoon_debug_show(struct seq_file *f, void *offset)
DEFINE_SHOW_ATTRIBUTE(vmballoon_debug);
-static int __init vmballoon_debugfs_init(struct vmballoon *b)
+static void __init vmballoon_debugfs_init(struct vmballoon *b)
{
- int error;
-
b->dbg_entry = debugfs_create_file("vmmemctl", S_IRUGO, NULL, b,
&vmballoon_debug_fops);
- if (IS_ERR(b->dbg_entry)) {
- error = PTR_ERR(b->dbg_entry);
- pr_err("failed to create debugfs entry, error: %d\n", error);
- return error;
- }
-
- return 0;
}
static void __exit vmballoon_debugfs_exit(struct vmballoon *b)
@@ -1724,9 +1715,8 @@ static void __exit vmballoon_debugfs_exit(struct vmballoon *b)
#else
-static inline int vmballoon_debugfs_init(struct vmballoon *b)
+static inline void vmballoon_debugfs_init(struct vmballoon *b)
{
- return 0;
}
static inline void vmballoon_debugfs_exit(struct vmballoon *b)
@@ -1948,10 +1938,6 @@ static int __init vmballoon_init(void)
if (error)
goto fail;
- error = vmballoon_debugfs_init(&balloon);
- if (error)
- goto fail;
-
/*
* Initialization of compaction must be done after the call to
* balloon_devinfo_init() .
@@ -1971,6 +1957,8 @@ static int __init vmballoon_init(void)
queue_delayed_work(system_freezable_wq, &balloon.dwork, 0);
+ vmballoon_debugfs_init(&balloon);
+
return 0;
fail:
vmballoon_unregister_shrinker(&balloon);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
index 09c16d88172e..bb6586d0e5af 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
@@ -754,7 +754,7 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
return (void *)misc_op;
}
-static int hns_dsaf_dev_match(struct device *dev, void *fwnode)
+static int hns_dsaf_dev_match(struct device *dev, const void *fwnode)
{
return dev->fwnode == fwnode;
}
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 28ec0d57941d..41c90f2ddb31 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -2286,7 +2286,7 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
struct ice_hw *hw;
int err;
- /* this driver uses devres, see Documentation/driver-model/devres.txt */
+ /* this driver uses devres, see Documentation/driver-model/devres.rst */
err = pcim_enable_device(pdev);
if (err)
return err;
diff --git a/drivers/net/ethernet/ti/cpsw-phy-sel.c b/drivers/net/ethernet/ti/cpsw-phy-sel.c
index 48e0924259f5..4e184eecc8e1 100644
--- a/drivers/net/ethernet/ti/cpsw-phy-sel.c
+++ b/drivers/net/ethernet/ti/cpsw-phy-sel.c
@@ -151,9 +151,9 @@ static void cpsw_gmii_sel_dra7xx(struct cpsw_phy_sel_priv *priv,
}
static struct platform_driver cpsw_phy_sel_driver;
-static int match(struct device *dev, void *data)
+static int match(struct device *dev, const void *data)
{
- struct device_node *node = (struct device_node *)data;
+ const struct device_node *node = (const struct device_node *)data;
return dev->of_node == node &&
dev->driver == &cpsw_phy_sel_driver.driver;
}
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 5f4ece0d5a73..ae27be85e363 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1371,7 +1371,7 @@ static int emac_devioctl(struct net_device *ndev, struct ifreq *ifrq, int cmd)
return -EOPNOTSUPP;
}
-static int match_first_device(struct device *dev, void *data)
+static int match_first_device(struct device *dev, const void *data)
{
if (dev->parent && dev->parent->of_node)
return of_device_is_compatible(dev->parent->of_node,
diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c
index c50a9772f4af..8479a440527b 100644
--- a/drivers/net/ethernet/toshiba/tc35815.c
+++ b/drivers/net/ethernet/toshiba/tc35815.c
@@ -694,10 +694,10 @@ err_out:
* should provide a "tc35815-mac" device with a MAC address in its
* platform_data.
*/
-static int tc35815_mac_match(struct device *dev, void *data)
+static int tc35815_mac_match(struct device *dev, const void *data)
{
struct platform_device *plat_dev = to_platform_device(dev);
- struct pci_dev *pci_dev = data;
+ const struct pci_dev *pci_dev = data;
unsigned int id = pci_dev->irq;
return !strcmp(plat_dev->name, "tc35815-mac") && plat_dev->id == id;
}
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index c7892c3da91f..ac5d945be88a 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -76,7 +76,7 @@ static struct bus_type nvmem_bus_type = {
.name = "nvmem",
};
-static int of_nvmem_match(struct device *dev, void *nvmem_np)
+static int of_nvmem_match(struct device *dev, const void *nvmem_np)
{
return dev->of_node == nvmem_np;
}
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 3b67896d9d74..44f53496cab1 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -281,7 +281,7 @@ unregister:
EXPORT_SYMBOL(of_mdiobus_register);
/* Helper function for of_phy_find_device */
-static int of_phy_match(struct device *dev, void *phy_np)
+static int of_phy_match(struct device *dev, const void *phy_np)
{
return dev->of_node == phy_np;
}
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index efbff44581b3..7801e25e6895 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -37,7 +37,7 @@ static const struct of_device_id of_skipped_node_table[] = {
{} /* Empty terminated list */
};
-static int of_dev_node_match(struct device *dev, void *data)
+static int of_dev_node_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 0e8e2c186f50..f9ef7ad3f75d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -64,7 +64,7 @@ static struct resource *get_pci_domain_busn_res(int domain_nr)
return &r->res;
}
-static int find_anything(struct device *dev, void *data)
+static int find_anything(struct device *dev, const void *data)
{
return 1;
}
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 5c7922612733..7f4e65872b8d 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -236,10 +236,10 @@ struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
}
EXPORT_SYMBOL(pci_get_domain_bus_and_slot);
-static int match_pci_dev_by_id(struct device *dev, void *data)
+static int match_pci_dev_by_id(struct device *dev, const void *data)
{
struct pci_dev *pdev = to_pci_dev(dev);
- struct pci_device_id *id = data;
+ const struct pci_device_id *id = data;
if (pci_match_one_device(id, pdev))
return 1;
diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c
index f7e354f85518..88ddbb2e30de 100644
--- a/drivers/pinctrl/devicetree.c
+++ b/drivers/pinctrl/devicetree.c
@@ -112,12 +112,11 @@ static int dt_to_map_one_config(struct pinctrl *p,
np_pctldev = of_get_next_parent(np_pctldev);
if (!np_pctldev || of_node_is_root(np_pctldev)) {
of_node_put(np_pctldev);
- ret = driver_deferred_probe_check_state(p->dev);
/* keep deferring if modules are enabled unless we've timed out */
- if (IS_ENABLED(CONFIG_MODULES) && !allow_default && ret == -ENODEV)
- ret = -EPROBE_DEFER;
+ if (IS_ENABLED(CONFIG_MODULES) && !allow_default)
+ return driver_deferred_probe_check_state_continue(p->dev);
- return ret;
+ return driver_deferred_probe_check_state(p->dev);
}
/* If we're creating a hog we can use the passed pctldev */
if (hog_pctldev && (np_pctldev == p->dev->of_node)) {
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 4ebf6d4fc66c..c522e9313c50 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -581,7 +581,7 @@ int ccwgroup_driver_register(struct ccwgroup_driver *cdriver)
}
EXPORT_SYMBOL(ccwgroup_driver_register);
-static int __ccwgroup_match_all(struct device *dev, void *data)
+static int __ccwgroup_match_all(struct device *dev, const void *data)
{
return 1;
}
@@ -608,9 +608,9 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver)
}
EXPORT_SYMBOL(ccwgroup_driver_unregister);
-static int __ccwgroupdev_check_busid(struct device *dev, void *id)
+static int __ccwgroupdev_check_busid(struct device *dev, const void *id)
{
- char *bus_id = id;
+ const char *bus_id = id;
return (strcmp(bus_id, dev_name(dev)) == 0);
}
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 8d9f36625ba5..8f080d3fd380 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -203,7 +203,7 @@ static void chsc_cleanup_sch_driver(void)
static DEFINE_SPINLOCK(chsc_lock);
-static int chsc_subchannel_match_next_free(struct device *dev, void *data)
+static int chsc_subchannel_match_next_free(struct device *dev, const void *data)
{
struct subchannel *sch = to_subchannel(dev);
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index e1f2d0eed544..22c55816100b 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -491,10 +491,10 @@ static int css_probe_device(struct subchannel_id schid, struct schib *schib)
}
static int
-check_subchannel(struct device * dev, void * data)
+check_subchannel(struct device *dev, const void *data)
{
struct subchannel *sch;
- struct subchannel_id *schid = data;
+ struct subchannel_id *schid = (void *)data;
sch = to_subchannel(dev);
return schid_equal(&sch->schid, schid);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 9985b7484a6b..c421899be20f 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -643,10 +643,10 @@ static int ccw_device_add(struct ccw_device *cdev)
return device_add(dev);
}
-static int match_dev_id(struct device *dev, void *data)
+static int match_dev_id(struct device *dev, const void *data)
{
struct ccw_device *cdev = to_ccwdev(dev);
- struct ccw_dev_id *dev_id = data;
+ struct ccw_dev_id *dev_id = (void *)data;
return ccw_dev_id_is_equal(&cdev->private->dev_id, dev_id);
}
@@ -1699,11 +1699,9 @@ EXPORT_SYMBOL_GPL(ccw_device_force_console);
* get ccw_device matching the busid, but only if owned by cdrv
*/
static int
-__ccwdev_check_busid(struct device *dev, void *id)
+__ccwdev_check_busid(struct device *dev, const void *id)
{
- char *bus_id;
-
- bus_id = id;
+ const char *bus_id = id;
return (strcmp(bus_id, dev_name(dev)) == 0);
}
diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c
index 6bca1d5455d4..9f26d4310bb3 100644
--- a/drivers/s390/cio/scm.c
+++ b/drivers/s390/cio/scm.c
@@ -174,10 +174,10 @@ out:
kobject_uevent(&scmdev->dev.kobj, KOBJ_CHANGE);
}
-static int check_address(struct device *dev, void *data)
+static int check_address(struct device *dev, const void *data)
{
struct scm_device *scmdev = to_scm_dev(dev);
- struct sale *sale = data;
+ const struct sale *sale = data;
return scmdev->address == sale->sa;
}
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index b9fc502c58c2..b7902b643ec8 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1356,16 +1356,16 @@ static int ap_get_compatible_type(ap_qid_t qid, int rawtype, unsigned int func)
* Helper function to be used with bus_find_dev
* matches for the card device with the given id
*/
-static int __match_card_device_with_id(struct device *dev, void *data)
+static int __match_card_device_with_id(struct device *dev, const void *data)
{
- return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long) data;
+ return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long)(void *) data;
}
/*
* Helper function to be used with bus_find_dev
* matches for the queue device with a given qid
*/
-static int __match_queue_device_with_qid(struct device *dev, void *data)
+static int __match_queue_device_with_qid(struct device *dev, const void *data)
{
return is_queue_dev(dev) && to_ap_queue(dev)->qid == (int)(long) data;
}
@@ -1374,7 +1374,7 @@ static int __match_queue_device_with_qid(struct device *dev, void *data)
* Helper function to be used with bus_find_dev
* matches any queue device with given queue id
*/
-static int __match_queue_device_with_queue_id(struct device *dev, void *data)
+static int __match_queue_device_with_queue_id(struct device *dev, const void *data)
{
return is_queue_dev(dev)
&& AP_QID_QUEUE(to_ap_queue(dev)->qid) == (int)(long) data;
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
index 2c9fb1423a39..7e85ba7c6ef0 100644
--- a/drivers/s390/crypto/vfio_ap_ops.c
+++ b/drivers/s390/crypto/vfio_ap_ops.c
@@ -26,7 +26,7 @@
static int vfio_ap_mdev_reset_queues(struct mdev_device *mdev);
-static int match_apqn(struct device *dev, void *data)
+static int match_apqn(struct device *dev, const void *data)
{
struct vfio_ap_queue *q = dev_get_drvdata(dev);
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index 7f0ceb65c3f3..c074631086a4 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -372,7 +372,7 @@ static ssize_t proc_scsi_write(struct file *file, const char __user *buf,
return err;
}
-static int always_match(struct device *dev, void *data)
+static int always_match(struct device *dev, const void *data)
{
return 1;
}
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 91673351bcf3..75ac046cae52 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -3652,7 +3652,7 @@ EXPORT_SYMBOL_GPL(spi_write_then_read);
/*-------------------------------------------------------------------------*/
#if IS_ENABLED(CONFIG_OF)
-static int __spi_of_device_match(struct device *dev, void *data)
+static int __spi_of_device_match(struct device *dev, const void *data)
{
return dev->of_node == data;
}
@@ -3753,7 +3753,7 @@ static int spi_acpi_controller_match(struct device *dev, const void *data)
return ACPI_COMPANION(dev->parent) == data;
}
-static int spi_acpi_device_match(struct device *dev, void *data)
+static int spi_acpi_device_match(struct device *dev, const void *data)
{
return ACPI_COMPANION(dev) == data;
}
diff --git a/drivers/staging/most/core.c b/drivers/staging/most/core.c
index 86a8545c8d97..b9841adb7181 100644
--- a/drivers/staging/most/core.c
+++ b/drivers/staging/most/core.c
@@ -561,13 +561,6 @@ static int split_string(char *buf, char **a, char **b, char **c, char **d)
return 0;
}
-static int match_bus_dev(struct device *dev, void *data)
-{
- char *mdev_name = data;
-
- return !strcmp(dev_name(dev), mdev_name);
-}
-
/**
* get_channel - get pointer to channel
* @mdev: name of the device interface
@@ -579,7 +572,7 @@ static struct most_channel *get_channel(char *mdev, char *mdev_ch)
struct most_interface *iface;
struct most_channel *c, *tmp;
- dev = bus_find_device(&mc.bus, NULL, mdev, match_bus_dev);
+ dev = bus_find_device_by_name(&mc.bus, NULL, mdev);
if (!dev)
return NULL;
iface = to_most_interface(dev);
diff --git a/drivers/thermal/broadcom/bcm2835_thermal.c b/drivers/thermal/broadcom/bcm2835_thermal.c
index ba39647a690c..3199977f1e73 100644
--- a/drivers/thermal/broadcom/bcm2835_thermal.c
+++ b/drivers/thermal/broadcom/bcm2835_thermal.c
@@ -123,8 +123,6 @@ static void bcm2835_thermal_debugfs(struct platform_device *pdev)
struct debugfs_regset32 *regset;
data->debugfsdir = debugfs_create_dir("bcm2835_thermal", NULL);
- if (!data->debugfsdir)
- return;
regset = devm_kzalloc(&pdev->dev, sizeof(*regset), GFP_KERNEL);
if (!regset)
diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c
index 79d214b7291c..5149a817456b 100644
--- a/drivers/thermal/intel/intel_powerclamp.c
+++ b/drivers/thermal/intel/intel_powerclamp.c
@@ -698,17 +698,9 @@ DEFINE_SHOW_ATTRIBUTE(powerclamp_debug);
static inline void powerclamp_create_debug_files(void)
{
debug_dir = debugfs_create_dir("intel_powerclamp", NULL);
- if (!debug_dir)
- return;
-
- if (!debugfs_create_file("powerclamp_calib", S_IRUGO, debug_dir,
- cal_data, &powerclamp_debug_fops))
- goto file_error;
- return;
-
-file_error:
- debugfs_remove_recursive(debug_dir);
+ debugfs_create_file("powerclamp_calib", S_IRUGO, debug_dir, cal_data,
+ &powerclamp_debug_fops);
}
static enum cpuhp_state hp_state;
diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c
index e85d54d1cdf3..ddb4a973c698 100644
--- a/drivers/thermal/intel/x86_pkg_temp_thermal.c
+++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c
@@ -75,29 +75,14 @@ static struct dentry *debugfs;
static unsigned int pkg_interrupt_cnt;
static unsigned int pkg_work_cnt;
-static int pkg_temp_debugfs_init(void)
+static void pkg_temp_debugfs_init(void)
{
- struct dentry *d;
-
debugfs = debugfs_create_dir("pkg_temp_thermal", NULL);
- if (!debugfs)
- return -ENOENT;
-
- d = debugfs_create_u32("pkg_thres_interrupt", S_IRUGO, debugfs,
- &pkg_interrupt_cnt);
- if (!d)
- goto err_out;
-
- d = debugfs_create_u32("pkg_thres_work", S_IRUGO, debugfs,
- &pkg_work_cnt);
- if (!d)
- goto err_out;
- return 0;
-
-err_out:
- debugfs_remove_recursive(debugfs);
- return -ENOENT;
+ debugfs_create_u32("pkg_thres_interrupt", S_IRUGO, debugfs,
+ &pkg_interrupt_cnt);
+ debugfs_create_u32("pkg_thres_work", S_IRUGO, debugfs,
+ &pkg_work_cnt);
}
/*
diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
index fcf70a3728b6..43941eb734eb 100644
--- a/drivers/thermal/tegra/soctherm.c
+++ b/drivers/thermal/tegra/soctherm.c
@@ -1485,23 +1485,13 @@ DEFINE_SHOW_ATTRIBUTE(regs);
static void soctherm_debug_init(struct platform_device *pdev)
{
struct tegra_soctherm *tegra = platform_get_drvdata(pdev);
- struct dentry *root, *file;
+ struct dentry *root;
root = debugfs_create_dir("soctherm", NULL);
- if (!root) {
- dev_err(&pdev->dev, "failed to create debugfs directory\n");
- return;
- }
tegra->debugfs_dir = root;
- file = debugfs_create_file("reg_contents", 0644, root,
- pdev, &regs_fops);
- if (!file) {
- dev_err(&pdev->dev, "failed to create debugfs file\n");
- debugfs_remove_recursive(tegra->debugfs_dir);
- tegra->debugfs_dir = NULL;
- }
+ debugfs_create_file("reg_contents", 0644, root, pdev, &regs_fops);
}
#else
static inline void soctherm_debug_init(struct platform_device *pdev) {}
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 10b56c66fec3..5668a44e0653 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -1967,10 +1967,10 @@ struct tb_sw_lookup {
u64 route;
};
-static int tb_switch_match(struct device *dev, void *data)
+static int tb_switch_match(struct device *dev, const void *data)
{
struct tb_switch *sw = tb_to_switch(dev);
- struct tb_sw_lookup *lookup = data;
+ const struct tb_sw_lookup *lookup = data;
if (!sw)
return 0;
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index e2f316ac8b01..b265ab5405f9 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -942,9 +942,9 @@ error:
return ret;
}
-static int match_devt(struct device *dev, void *data)
+static int match_devt(struct device *dev, const void *data)
{
- return dev->devt == (dev_t) (unsigned long) data;
+ return dev->devt == (dev_t)(unsigned long)(void *)data;
}
static struct usb_device *usbdev_lookup_by_devt(dev_t devt)
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 5a0df527a8ca..0ab8738047da 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -325,9 +325,9 @@ struct find_interface_arg {
struct device_driver *drv;
};
-static int __find_interface(struct device *dev, void *data)
+static int __find_interface(struct device *dev, const void *data)
{
- struct find_interface_arg *arg = data;
+ const struct find_interface_arg *arg = data;
struct usb_interface *intf;
if (!is_usb_interface(dev))
diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c
index a3cb25cb74f8..d16dfc320faa 100644
--- a/drivers/usb/phy/phy-am335x-control.c
+++ b/drivers/usb/phy/phy-am335x-control.c
@@ -118,9 +118,9 @@ static const struct of_device_id omap_control_usb_id_table[] = {
MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);
static struct platform_driver am335x_control_driver;
-static int match(struct device *dev, void *data)
+static int match(struct device *dev, const void *data)
{
- struct device_node *node = (struct device_node *)data;
+ const struct device_node *node = (const struct device_node *)data;
return dev->of_node == node &&
dev->driver == &am335x_control_driver.driver;
}
diff --git a/drivers/usb/phy/phy-isp1301.c b/drivers/usb/phy/phy-isp1301.c
index 93b7d6a30aad..6cf6fbd39237 100644
--- a/drivers/usb/phy/phy-isp1301.c
+++ b/drivers/usb/phy/phy-isp1301.c
@@ -142,9 +142,9 @@ static struct i2c_driver isp1301_driver = {
module_i2c_driver(isp1301_driver);
-static int match(struct device *dev, void *data)
+static int match(struct device *dev, const void *data)
{
- struct device_node *node = (struct device_node *)data;
+ const struct device_node *node = (const struct device_node *)data;
return (dev->of_node == node) &&
(dev->driver == &isp1301_driver.driver);
}
diff --git a/drivers/visorbus/visorbus_main.c b/drivers/visorbus/visorbus_main.c
index 0b2434cc4ecd..152fd29f04f2 100644
--- a/drivers/visorbus/visorbus_main.c
+++ b/drivers/visorbus/visorbus_main.c
@@ -171,10 +171,10 @@ struct visor_busdev {
u32 dev_no;
};
-static int match_visorbus_dev_by_id(struct device *dev, void *data)
+static int match_visorbus_dev_by_id(struct device *dev, const void *data)
{
struct visor_device *vdev = to_visor_device(dev);
- struct visor_busdev *id = data;
+ const struct visor_busdev *id = data;
if (vdev->chipset_bus_no == id->bus_no &&
vdev->chipset_dev_no == id->dev_no)
diff --git a/drivers/watchdog/bcm_kona_wdt.c b/drivers/watchdog/bcm_kona_wdt.c
index e2ad44816359..921291025680 100644
--- a/drivers/watchdog/bcm_kona_wdt.c
+++ b/drivers/watchdog/bcm_kona_wdt.c
@@ -143,24 +143,18 @@ static void bcm_kona_wdt_debug_init(struct platform_device *pdev)
wdt->debugfs = NULL;
dir = debugfs_create_dir(BCM_KONA_WDT_NAME, NULL);
- if (IS_ERR_OR_NULL(dir))
- return;
- if (debugfs_create_file("info", S_IFREG | S_IRUGO, dir, wdt,
- &bcm_kona_fops))
- wdt->debugfs = dir;
- else
- debugfs_remove_recursive(dir);
+ debugfs_create_file("info", S_IFREG | S_IRUGO, dir, wdt,
+ &bcm_kona_fops);
+ wdt->debugfs = dir;
}
static void bcm_kona_wdt_debug_exit(struct platform_device *pdev)
{
struct bcm_kona_wdt *wdt = platform_get_drvdata(pdev);
- if (wdt && wdt->debugfs) {
+ if (wdt)
debugfs_remove_recursive(wdt->debugfs);
- wdt->debugfs = NULL;
- }
}
#else
diff --git a/drivers/watchdog/mei_wdt.c b/drivers/watchdog/mei_wdt.c
index 8023cf28657a..96a770938ff0 100644
--- a/drivers/watchdog/mei_wdt.c
+++ b/drivers/watchdog/mei_wdt.c
@@ -539,38 +539,23 @@ static void dbgfs_unregister(struct mei_wdt *wdt)
wdt->dbgfs_dir = NULL;
}
-static int dbgfs_register(struct mei_wdt *wdt)
+static void dbgfs_register(struct mei_wdt *wdt)
{
- struct dentry *dir, *f;
+ struct dentry *dir;
dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
- if (!dir)
- return -ENOMEM;
-
wdt->dbgfs_dir = dir;
- f = debugfs_create_file("state", S_IRUSR, dir, wdt, &dbgfs_fops_state);
- if (!f)
- goto err;
- f = debugfs_create_file("activation", S_IRUSR,
- dir, wdt, &dbgfs_fops_activation);
- if (!f)
- goto err;
+ debugfs_create_file("state", S_IRUSR, dir, wdt, &dbgfs_fops_state);
- return 0;
-err:
- dbgfs_unregister(wdt);
- return -ENODEV;
+ debugfs_create_file("activation", S_IRUSR, dir, wdt,
+ &dbgfs_fops_activation);
}
#else
static inline void dbgfs_unregister(struct mei_wdt *wdt) {}
-
-static inline int dbgfs_register(struct mei_wdt *wdt)
-{
- return 0;
-}
+static inline void dbgfs_register(struct mei_wdt *wdt) {}
#endif /* CONFIG_DEBUG_FS */
static int mei_wdt_probe(struct mei_cl_device *cldev,
@@ -623,8 +608,7 @@ static int mei_wdt_probe(struct mei_cl_device *cldev,
if (ret)
goto err_disable;
- if (dbgfs_register(wdt))
- dev_warn(&cldev->dev, "cannot register debugfs\n");
+ dbgfs_register(wdt);
return 0;