提交 f84d5a76 编写于 作者: V vignesh babu 提交者: Linus Torvalds

is_power_of_2: kernel/kfifo.c

Replace (n & (n-1)) with is_power_of_2()
Signed-off-by: Nvignesh babu <vignesh.babu@wipro.com>
Acked-by: NStelian Pop <stelian@popies.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 cf99abac
......@@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/kfifo.h>
#include <linux/log2.h>
/**
* kfifo_init - allocates a new FIFO using a preallocated buffer
......@@ -41,7 +42,7 @@ struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size,
struct kfifo *fifo;
/* size must be a power of 2 */
BUG_ON(size & (size - 1));
BUG_ON(!is_power_of_2(size));
fifo = kmalloc(sizeof(struct kfifo), gfp_mask);
if (!fifo)
......
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