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include/linux/log2.h: add missing () around n in roundup_pow_of_two()

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[ Upstream commit 428fc0aff4 ]

Otherwise gcc generates warnings if the expression is complicated.

Fixes: 312a0c1709 ("[PATCH] LOG2: Alter roundup_pow_of_two() so that it can use a ilog2() on a constant")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/0-v1-8a2697e3c003+41165-log_brackets_jgg@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jason Gunthorpe
2020-09-04 16:36:19 -07:00
committed by Greg Kroah-Hartman
parent 2e4a2bac24
commit ad68326969
1 changed files with 1 additions and 1 deletions
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include/linux/log2.h
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@@ -159,7 +159,7 @@ unsigned long __rounddown_pow_of_two(unsigned long n)
#define roundup_pow_of_two(n) \
( \
__builtin_constant_p(n) ? ( \
(n == 1) ? 1 : \
((n) == 1) ? 1 : \
(1UL << (ilog2((n) - 1) + 1)) \
) : \
__roundup_pow_of_two(n) \