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authorSuzuki K Poulose <suzuki.poulose@arm.com>2019-06-14 18:54:00 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-24 05:22:31 +0200
commit92ce7e83b4e5c86687d748ba53cb755acdce1256 (patch)
tree5d8eedc78c42492e40e0a902faa7d721d1a8ad30
parent418e3ea157efb0eb2c6dd412a8d5f052477c7f5a (diff)
driver_find_device: Unify the match function with class_find_device()
The driver_find_device() accepts a match function pointer to filter the devices for lookup, similar to bus/class_find_device(). However, there is a minor difference in the prototype for the match parameter for driver_find_device() with the now unified version accepted by {bus/class}_find_device(), where it doesn't accept a "const" qualifier for the data argument. This prevents us from reusing the generic match functions for driver_find_device(). For this reason, change the prototype of the driver_find_device() to make the "match" parameter in line with {bus/class}_find_device() and adjust its callers to use the const qualifier. Also, we could now promote the "data" parameter to const as we pass it down as a const parameter to the match functions. Cc: Corey Minyard <minyard@acm.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Sebastian Ott <sebott@linux.ibm.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Nehal Shah <nehal-bakulchandra.shah@amd.com> Cc: Shyam Sundar S K <shyam-sundar.s-k@amd.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/amba/tegra-ahb.c4
-rw-r--r--drivers/base/driver.c4
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c8
-rw-r--r--drivers/gpu/drm/tegra/dc.c4
-rw-r--r--drivers/i2c/busses/i2c-amd-mp2-pci.c2
-rw-r--r--drivers/iommu/arm-smmu-v3.c2
-rw-r--r--drivers/iommu/arm-smmu.c2
-rw-r--r--drivers/mfd/altera-sysmgr.c4
-rw-r--r--drivers/s390/cio/ccwgroup.c4
-rw-r--r--drivers/s390/cio/chsc_sch.c2
-rw-r--r--drivers/s390/cio/device.c2
-rw-r--r--include/linux/device.h4
12 files changed, 21 insertions, 21 deletions
diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index 3751d811be39..42175a67ba0e 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -143,10 +143,10 @@ 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/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/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/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 607a6ea17ecc..52109a63e797 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2375,10 +2375,10 @@ 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/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/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 4d5a694f02c2..d787856f9dcf 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -2023,7 +2023,7 @@ 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 5e54cc0a28b3..4ce429b74655 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1431,7 +1431,7 @@ 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/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/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 4ebf6d4fc66c..ea17615789c9 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;
}
@@ -608,7 +608,7 @@ 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;
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/device.c b/drivers/s390/cio/device.c
index d32f373e5bc7..f27536ba58eb 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1653,7 +1653,7 @@ 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;
diff --git a/include/linux/device.h b/include/linux/device.h
index cbbdcadc660e..4d7c88131a4d 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -336,8 +336,8 @@ extern int __must_check driver_for_each_device(struct device_driver *drv,
int (*fn)(struct device *dev,
void *));
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));
void driver_deferred_probe_add(struct device *dev);
int driver_deferred_probe_check_state(struct device *dev);