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authorDavid Härdeman <david@hardeman.nu>2010-04-06 14:34:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-04-07 08:38:02 -0700
commit530cd330dc3865e3107304a6e84fdc332aa72f7d (patch)
tree414102f790dac9ad80af3c82935e5164b04a1b5e /include
parenta3a2e76c77fa22b114e421ac11dec0c56c3503fb (diff)
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include/linux/kfifo.h: fix INIT_KFIFO()
DECLARE_KFIFO creates a union with a struct kfifo and a buffer array with size [size + sizeof(struct kfifo)]. INIT_KFIFO then sets the buffer pointer in struct kfifo to point to the beginning of the buffer array which means that the first call to kfifo_in will overwrite members of the struct kfifo. Signed-off-by: David Härdeman <david@hardeman.nu> Acked-by: Stefani Seibold <stefani@seibold.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/kfifo.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index ece0b1c3381..e117b1aee69 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -86,7 +86,8 @@ union { \
*/
#define INIT_KFIFO(name) \
name = __kfifo_initializer(sizeof(name##kfifo_buffer) - \
- sizeof(struct kfifo), name##kfifo_buffer)
+ sizeof(struct kfifo), \
+ name##kfifo_buffer + sizeof(struct kfifo))
/**
* DEFINE_KFIFO - macro to define and initialize a kfifo