Signed-off-by: Robert P. J. Day <rpjday@xxxxxxxxxxxxxx>
---
diff --git a/include/asm-sparc64/vio.h b/include/asm-sparc64/vio.h
index f7417e9..d4de32f 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)));
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://crashcourse.ca
========================================================================
-
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