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kernel/kfifo.c: replace conditional test with is_power_of_2()
author
Robert P. J. Day
<rpjday@crashcourse.ca>
Tue, 16 Jun 2009 22:33:34 +0000
(15:33 -0700)
committer
Linus Torvalds
<torvalds@linux-foundation.org>
Wed, 17 Jun 2009 02:47:47 +0000
(19:47 -0700)
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/kfifo.c
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diff --git
a/kernel/kfifo.c
b/kernel/kfifo.c
index
bc41ad0
..
26539e3
100644
(file)
--- a/
kernel/kfifo.c
+++ b/
kernel/kfifo.c
@@
-72,9
+72,9
@@
struct kfifo *kfifo_alloc(unsigned int size, gfp_t gfp_mask, spinlock_t *lock)
/*
* round up to the next power of 2, since our 'let the indices
- * wrap' t
a
chnique works only in this case.
+ * wrap' t
e
chnique works only in this case.
*/
- if (
size & (size - 1
)) {
+ if (
!is_power_of_2(size
)) {
BUG_ON(size > 0x80000000);
size = roundup_pow_of_two(size);
}