Commit ff711d67 authored by Alexander Lobakin's avatar Alexander Lobakin Committed by Thomas Bogendoerfer
Browse files

MIPS: checksum: fix sparse flooding on asm/checksum.h 



csum_fold() in MIPS' asm/checksum.h is another source of sparse flooding
when building different networking source code.
The thing is that only half of __wsum <--> u32 casts inside the function
is forced, which is insufficient.
Add all necessary forced typecasting to stop floods and simplify actual
bug hunting.

Signed-off-by: default avatarAlexander Lobakin <alobakin@pm.me>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent 7b5f9694

arch/mips/include/asm/checksum.h

+2 −2
Original line number Diff line number Diff line
@@ -113,9 +113,9 @@ static inline __sum16 csum_fold(__wsum csum) 
	u32 sum = (__force u32)csum;



	sum += (sum << 16);

	csum = (sum < csum);

	csum = (__force __wsum)(sum < (__force u32)csum);

	sum >>= 16;

	sum += csum;

	sum += (__force u32)csum;



	return (__force __sum16)~sum;

}