X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fkfifo.c;h=bc41ad0f24f881845d96d77a00a3d3535968566b;hb=5e16e3f0e24dadb79b96b6134cd3303f0d42f0c5;hp=cee419143fd47bb410b0cf80e7762a0f02ffbfce;hpb=a22a0fab32e1216df56e4b9a577dc5c922cf7524;p=linux-2.6

diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index cee419143f..bc41ad0f24 100644
--- a/kernel/kfifo.c
+++ b/kernel/kfifo.c
@@ -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)