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authorStefani Seibold <stefani@seibold.net>2013-11-15 02:32:17 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 04:32:23 +0400
commit498d319bb512992ef0784c278fa03679f2f5649d (patch)
tree2793b41c3a98b858d24aa833ccc2bfb2f6d60974 /drivers/gpu/drm/drm_flip_work.c
parenta019e48cfbfb358786326db3dbc1c565b8f14a56 (diff)
downloadlinux-498d319bb512992ef0784c278fa03679f2f5649d.tar.xz
kfifo API type safety
This patch enhances the type safety for the kfifo API. It is now safe to put const data into a non const FIFO and the API will now generate a compiler warning when reading from the fifo where the destination address is pointing to a const variable. As a side effect the kfifo_put() does now expect the value of an element instead a pointer to the element. This was suggested Russell King. It make the handling of the kfifo_put easier since there is no need to create a helper variable for getting the address of a pointer or to pass integers of different sizes. IMHO the API break is okay, since there are currently only six users of kfifo_put(). The code is also cleaner by kicking out the "if (0)" expressions. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Stefani Seibold <stefani@seibold.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpu/drm/drm_flip_work.c')
-rw-r--r--drivers/gpu/drm/drm_flip_work.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_flip_work.c b/drivers/gpu/drm/drm_flip_work.c
index e788882d9021..f9c7fa3d0012 100644
--- a/drivers/gpu/drm/drm_flip_work.c
+++ b/drivers/gpu/drm/drm_flip_work.c
@@ -34,7 +34,7 @@
*/
void drm_flip_work_queue(struct drm_flip_work *work, void *val)
{
- if (kfifo_put(&work->fifo, (const void **)&val)) {
+ if (kfifo_put(&work->fifo, val)) {
atomic_inc(&work->pending);
} else {
DRM_ERROR("%s fifo full!\n", work->name);