kernel/kfifo.c: replace conditional test with is_power_of_2()
authorRobert P. J. Day <rpjday@crashcourse.ca>
Tue, 16 Jun 2009 22:33:34 +0000 (15:33 -0700)
committerLinus 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

index bc41ad0f24f881845d96d77a00a3d3535968566b..26539e3228e50f81ca892122a23b6bd1fcf98fe6 100644 (file)
@@ -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);
        }