Signed-off-by: Robert P. J. Day <[EMAIL PROTECTED]>
---
diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c
index 22c3b4f..53b4e91 100644
--- a/arch/powerpc/lib/rheap.c
+++ b/arch/powerpc/lib/rheap.c
@@ -19,6 +19,7 @@
#include <linux/mm.h>
#include <linux/err.h>
#include <linux/slab.h>
+#include <linux/log2.h>
#include <asm/rheap.h>
@@ -254,8 +255,7 @@ rh_info_t *rh_create(unsigned int alignment)
{
rh_info_t *info;
- /* Alignment must be a power of two */
- if ((alignment & (alignment - 1)) != 0)
+ if (!is_power_of_2(alignment))
return ERR_PTR(-EINVAL);
info = kmalloc(sizeof(*info), GFP_KERNEL);
@@ -303,8 +303,7 @@ void rh_init(rh_info_t * info, unsigned int alignment, int
max_blocks,
int i;
rh_block_t *blk;
- /* Alignment must be a power of two */
- if ((alignment & (alignment - 1)) != 0)
+ if (!is_power_of_2(alignment))
return;
info->alignment = alignment;
@@ -446,8 +445,7 @@ unsigned long rh_alloc_align(rh_info_t * info, int size,
int alignment, const ch
rh_block_t *newblk;
unsigned long start, sp_size;
- /* Validate size, and alignment must be power of two */
- if (size <= 0 || (alignment & (alignment - 1)) != 0)
+ if (size <= 0 || !is_power_of_2(alignment))
return (unsigned long) -EINVAL;
/* Align to configured alignment */
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://crashcourse.ca
========================================================================
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