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authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-04 20:07:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-04 20:07:20 -0700
commit06dd3dfeea60e2a6457a6aedf97afc8e6d2ba497 (patch)
tree1d8b9efbd7cd3dbb5d7b7663d7fd2de61b26f453 /lib
parent38047d5c269bbdedf900fc86954913f3dffa01f1 (diff)
parent86f690e8bfd124c38940e7ad58875ef383003348 (diff)
Merge tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc updates from Greg KH: "Here is the big set of char/misc driver patches for 4.17-rc1. There are a lot of little things in here, nothing huge, but all important to the different hardware types involved: - thunderbolt driver updates - parport updates (people still care...) - nvmem driver updates - mei updates (as always) - hwtracing driver updates - hyperv driver updates - extcon driver updates - ... and a handful of even smaller driver subsystem and individual driver updates All of these have been in linux-next with no reported issues" * tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (149 commits) hwtracing: Add HW tracing support menu intel_th: Add ACPI glue layer intel_th: Allow forcing host mode through drvdata intel_th: Pick up irq number from resources intel_th: Don't touch switch routing in host mode intel_th: Use correct method of finding hub intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate stm class: Make dummy's master/channel ranges configurable stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate MAINTAINERS: Bestow upon myself the care for drivers/hwtracing hv: add SPDX license id to Kconfig hv: add SPDX license to trace Drivers: hv: vmbus: do not mark HV_PCIE as perf_device Drivers: hv: vmbus: respect what we get from hv_get_synint_state() /dev/mem: Avoid overwriting "err" in read_mem() eeprom: at24: use SPDX identifier instead of GPL boiler-plate eeprom: at24: simplify the i2c functionality checking eeprom: at24: fix a line break eeprom: at24: tweak newlines eeprom: at24: refactor at24_probe() ...
Diffstat (limited to 'lib')
-rw-r--r--lib/devres.c78
1 files changed, 38 insertions, 40 deletions
diff --git a/lib/devres.c b/lib/devres.c
index 5f2aedd58bc5..5bec1120b392 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -5,6 +5,12 @@
#include <linux/gfp.h>
#include <linux/export.h>
+enum devm_ioremap_type {
+ DEVM_IOREMAP = 0,
+ DEVM_IOREMAP_NC,
+ DEVM_IOREMAP_WC,
+};
+
void devm_ioremap_release(struct device *dev, void *res)
{
iounmap(*(void __iomem **)res);
@@ -15,24 +21,28 @@ static int devm_ioremap_match(struct device *dev, void *res, void *match_data)
return *(void **)res == match_data;
}
-/**
- * devm_ioremap - Managed ioremap()
- * @dev: Generic device to remap IO address for
- * @offset: Resource address to map
- * @size: Size of map
- *
- * Managed ioremap(). Map is automatically unmapped on driver detach.
- */
-void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
- resource_size_t size)
+static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset,
+ resource_size_t size,
+ enum devm_ioremap_type type)
{
- void __iomem **ptr, *addr;
+ void __iomem **ptr, *addr = NULL;
ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
if (!ptr)
return NULL;
- addr = ioremap(offset, size);
+ switch (type) {
+ case DEVM_IOREMAP:
+ addr = ioremap(offset, size);
+ break;
+ case DEVM_IOREMAP_NC:
+ addr = ioremap_nocache(offset, size);
+ break;
+ case DEVM_IOREMAP_WC:
+ addr = ioremap_wc(offset, size);
+ break;
+ }
+
if (addr) {
*ptr = addr;
devres_add(dev, ptr);
@@ -41,6 +51,20 @@ void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
return addr;
}
+
+/**
+ * devm_ioremap - Managed ioremap()
+ * @dev: Generic device to remap IO address for
+ * @offset: Resource address to map
+ * @size: Size of map
+ *
+ * Managed ioremap(). Map is automatically unmapped on driver detach.
+ */
+void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
+ resource_size_t size)
+{
+ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP);
+}
EXPORT_SYMBOL(devm_ioremap);
/**
@@ -55,20 +79,7 @@ EXPORT_SYMBOL(devm_ioremap);
void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
resource_size_t size)
{
- void __iomem **ptr, *addr;
-
- ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
- return NULL;
-
- addr = ioremap_nocache(offset, size);
- if (addr) {
- *ptr = addr;
- devres_add(dev, ptr);
- } else
- devres_free(ptr);
-
- return addr;
+ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_NC);
}
EXPORT_SYMBOL(devm_ioremap_nocache);
@@ -83,20 +94,7 @@ EXPORT_SYMBOL(devm_ioremap_nocache);
void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset,
resource_size_t size)
{
- void __iomem **ptr, *addr;
-
- ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
- return NULL;
-
- addr = ioremap_wc(offset, size);
- if (addr) {
- *ptr = addr;
- devres_add(dev, ptr);
- } else
- devres_free(ptr);
-
- return addr;
+ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_WC);
}
EXPORT_SYMBOL(devm_ioremap_wc);