[PATCH v3 1/4] devres: constify p in devm_kfree()

[Bartosz Golaszewski]

Make devm_kfree() signature uniform with that of kfree(). To avoid
compiler warnings: cast p to (void *) when calling devres_destroy().

Signed-off-by: Bartosz Golaszewski <b...@bgdev.pl>
Reviewed-by: Bjorn Andersson <bjorn.anders...@linaro.org>
---
 drivers/base/devres.c  | 5 +++--
 include/linux/device.h | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index f98a097e73f2..438c91a43508 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -885,11 +885,12 @@ EXPORT_SYMBOL_GPL(devm_kasprintf);
  *
  * Free memory allocated with devm_kmalloc().
  */
-void devm_kfree(struct device *dev, void *p)
+void devm_kfree(struct device *dev, const void *p)
 {
        int rc;
 
-       rc = devres_destroy(dev, devm_kmalloc_release, devm_kmalloc_match, p);
+       rc = devres_destroy(dev, devm_kmalloc_release,
+                           devm_kmalloc_match, (void *)p);
        WARN_ON(rc);
 }
 EXPORT_SYMBOL_GPL(devm_kfree);
diff --git a/include/linux/device.h b/include/linux/device.h
index 8f882549edee..33f7cb271fbb 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -692,7 +692,7 @@ static inline void *devm_kcalloc(struct device *dev,
 {
        return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO);
 }
-extern void devm_kfree(struct device *dev, void *p);
+extern void devm_kfree(struct device *dev, const void *p);
 extern char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp) 
__malloc;
 extern void *devm_kmemdup(struct device *dev, const void *src, size_t len,
                          gfp_t gfp);
-- 
2.18.0