From: Robert P. J. Day <rpjday@crashcourse.ca>
Date: Tue, 16 Jun 2009 22:33:34 +0000 (-0700)
Subject: kernel/kfifo.c: replace conditional test with is_power_of_2()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b33112d1cc25e658c334125d127a6ae15d5a0ad6;p=linux-beck.git

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>
---

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);
 	}