From: Phong Tran tranmanphong@gmail.com
commit 440868661f36071886ed360d91de83bd67c73b4f upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- include/linux/of.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/include/linux/of.h +++ b/include/linux/of.h @@ -199,8 +199,8 @@ extern struct device_node *of_find_all_n 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; }