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PTR_ALIGN

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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>
This commit is contained in:
Matthew Wilcox 2007-09-11 15:23:47 -07:00 committed by Linus Torvalds
parent f3d79b20df
commit a83308e60f
1 changed files with 1 additions and 0 deletions
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include/linux/kernel.h
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@ -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))