From: Robert P. J. Day <rpjday@crashcourse.ca>
Date: Wed, 7 Nov 2007 10:24:33 +0000 (-0800)
Subject: [SPARC64]: Use "is_power_of_2" macro for simplicity.
X-Git-Tag: v2.6.24-rc3~178^2
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f78a19702574008bbd333237380fa85be1c9e5d;p=linux-2.6

[SPARC64]: Use "is_power_of_2" macro for simplicity.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/asm-sparc64/vio.h b/include/asm-sparc64/vio.h
index f7417e91b1..d4de32f0f8 100644
--- a/include/asm-sparc64/vio.h
+++ b/include/asm-sparc64/vio.h
@@ -8,6 +8,7 @@
 #include <linux/spinlock.h>
 #include <linux/completion.h>
 #include <linux/list.h>
+#include <linux/log2.h>
 
 #include <asm/ldc.h>
 #include <asm/mdesc.h>
@@ -257,8 +258,7 @@ static inline void *vio_dring_entry(struct vio_dring_state *dr,
 static inline u32 vio_dring_avail(struct vio_dring_state *dr,
 				  unsigned int ring_size)
 {
-	/* Ensure build-time power-of-2.  */
-	BUILD_BUG_ON(ring_size & (ring_size - 1));
+	BUILD_BUG_ON(!is_power_of_2(ring_size));
 
 	return (dr->pending -
 		((dr->prod - dr->cons) & (ring_size - 1)));