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authorMatthew Wilcox <matthew@wil.cx>2007-09-12 02:23:47 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-09-12 04:21:20 +0400
commita83308e60f63749dc1d08acb0d8fa9e2ec13c9a7 (patch)
tree6a71aead89fcd7b06cf121b8e9134cfe4ff0c259 /include/linux
parentf3d79b20df961880697c8442e1f7bc7969ce50a4 (diff)
downloadlinux-a83308e60f63749dc1d08acb0d8fa9e2ec13c9a7.tar.xz
PTR_ALIGN
The AdvanSys driver wants to align some pointers, and the ALIGN macro doesn't work for pointers. Rather than try to make it work, add a new PTR_ALIGN macro which is typesafe. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/kernel.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index f592df74b3cf..47160fe378c9 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -34,6 +34,7 @@ extern const char linux_proc_banner[];
#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+#define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a)))
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))