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authorRobert P. J. Day2009-06-17 00:33:34 +0200
committerLinus Torvalds2009-06-17 04:47:47 +0200
commitb33112d1cc25e658c334125d127a6ae15d5a0ad6 (patch)
treea09dc0715c317198caf868010a6e10f67bf939c2 /kernel/kfifo.c
parentatomic: only take lock when the counter drops to zero on UP as well (diff)
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kernel/kfifo.c: replace conditional test with is_power_of_2()
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>
Diffstat (limited to 'kernel/kfifo.c')
-rw-r--r--kernel/kfifo.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index bc41ad0f24f8..26539e3228e5 100644
--- 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' tachnique works only in this case.
+ * wrap' technique 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);
}