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Commit d6d2a2ab authored by Linus Torvalds's avatar Linus Torvalds
Browse files

x86: fix new find_first_bit() 



Some edge problems with the original C rewrite.

Thanks go to Cal Peake, who pinpointed the breakage to the rewrite, and
tested this fixed version.

Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 33ac02aa

include/asm-i386/bitops.h

+6 −7
Original line number Diff line number Diff line
@@ -335,14 +335,13 @@ static inline unsigned long __ffs(unsigned long word) 
static inline int find_first_bit(const unsigned long *addr, unsigned size)

{

	int x = 0;

	do {

		if (*addr)

			return __ffs(*addr) + x;

		addr++;

		if (x >= size)

			break;



	while (x < size) {

		unsigned long val = *addr++;

		if (val)

			return __ffs(val) + x;

		x += (sizeof(*addr)<<3);

	} while (1);

	}

	return x;

}