Commit f6a12a7d authored May 23, 2013 by Meyer, Kirk Committed by Michal Simek May 27, 2013

microblaze: Reversed logic in futex cmpxchg



futex_atomic_cmpxchg_inatomic exchanged if the values were
unequal rather than equal. This caused incorrect behavior
of robust futexes.

Signed-off-by: Kirk Meyer <kirk.meyer@sencore.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

parent b5dd0bb4

arch/microblaze/include/asm/futex.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -105,7 +105,7 @@ futex_atomic_cmpxchg_inatomic(u32 uval, u32 __user uaddr,

		__asm__ __volatile__ ("1: lwx %1, %3, r0; \
		cmp %2, %1, %4; \
		beqi %2, 3f; \
		bnei %2, 3f; \
		2: swx %5, %3, r0; \
		addic %2, r0, 0; \
		bnei %2, 1b; \