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lib/iommu-common.c: do not use 0xffffffffffffffffl for computing align_mask

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Using a 64 bit constant generates "warning: integer constant is too
large for 'long' type" on 32 bit platforms.  Instead use ~0ul and
BITS_PER_LONG.

Detected by Andrew Morton on ARMD.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sowmini Varadhan 2015-08-06 15:46:39 -07:00 committed by Linus Torvalds
parent 3e810ae2db
commit 447f6a95a9
1 changed files with 1 additions and 1 deletions
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2
lib/iommu-common.c
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@ -119,7 +119,7 @@ unsigned long iommu_tbl_range_alloc(struct device *dev,
unsigned long align_mask = 0;
if (align_order > 0)
align_mask = 0xffffffffffffffffl >> (64 - align_order);
align_mask = ~0ul >> (BITS_PER_LONG - align_order);
/* Sanity check */
if (unlikely(npages == 0)) {