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

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Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert P. J. Day 2007-11-07 02:24:33 -08:00 committed by David S. Miller
parent 9c969ffe1f
commit 6f78a19702
1 changed files with 2 additions and 2 deletions
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4
include/asm-sparc64/vio.h
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@ -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)));