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of: fix clang -Wunsequenced for be32_to_cpu() 

Now, make the loop explicit to avoid clang warning.

./include/linux/of.h:238:37: warning: multiple unsequenced modifications
to 'cell' [-Wunsequenced]
                r = (r << 32) | be32_to_cpu(*(cell++));
                                                  ^~
./include/linux/byteorder/generic.h:95:21: note: expanded from macro
'be32_to_cpu'
                    ^
./include/uapi/linux/byteorder/little_endian.h:40:59: note: expanded
from macro '__be32_to_cpu'
                                                          ^
./include/uapi/linux/swab.h:118:21: note: expanded from macro '__swab32'
        ___constant_swab32(x) :                 \
                           ^
./include/uapi/linux/swab.h:18:12: note: expanded from macro
'___constant_swab32'
        (((__u32)(x) & (__u32)0x000000ffUL) << 24) |            \
                  ^

Signed-off-by: Phong Tran <tranmanphong@gmail.com>
Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/460
Suggested-by: David Laight <David.Laight@ACULAB.COM>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: stable@vger.kernel.org
[robh: fix up whitespace]
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Phong Tran 2019-04-30 21:56:24 +07:00 committed by Rob Herring
parent 8e94fd3622
commit 440868661f
1 changed files with 2 additions and 2 deletions
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4
include/linux/of.h
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@ -234,8 +234,8 @@ extern struct device_node *of_find_all_nodes(struct device_node *prev);
static inline u64 of_read_number(const __be32 *cell, int size)
{
u64 r = 0;
while (size--)
r = (r << 32) | be32_to_cpu(*(cell++));
for (; size--; cell++)
r = (r << 32) | be32_to_cpu(*cell);
return r;
}