From caa17d49f9a5cc09b3bbb101dc640f914f3b4ff7 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 2 Sep 2014 11:40:16 +0200 Subject: [PATCH] locking, sparc64: Fix atomics The patch folding the atomic ops had a silly fail in the _return primitives. Fixes: 4f3316c2b5fe ("locking,arch,sparc: Fold atomic_ops") Reported-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: Peter Zijlstra (Intel) Cc: "David S. Miller" Cc: Stephen Rothwell Cc: David S. Miller Cc: Linus Torvalds Cc: sparclinux@vger.kernel.org Link: http://lkml.kernel.org/r/20140902094016.GD31157@worktop.ger.corp.intel.com Signed-off-by: Ingo Molnar --- arch/sparc/lib/atomic_64.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S index 96d70b4dbe77..05dac43907d1 100644 --- a/arch/sparc/lib/atomic_64.S +++ b/arch/sparc/lib/atomic_64.S @@ -37,7 +37,7 @@ ENTRY(atomic_##op##_return) /* %o0 = increment, %o1 = atomic_ptr */ \ cas [%o1], %g1, %g7; \ cmp %g1, %g7; \ bne,pn %icc, BACKOFF_LABEL(2f, 1b); \ - add %g1, %o0, %g1; \ + op %g1, %o0, %g1; \ retl; \ sra %g1, 0, %o0; \ 2: BACKOFF_SPIN(%o2, %o3, 1b); \ @@ -76,7 +76,7 @@ ENTRY(atomic64_##op##_return) /* %o0 = increment, %o1 = atomic_ptr */ \ bne,pn %xcc, BACKOFF_LABEL(2f, 1b); \ nop; \ retl; \ - add %g1, %o0, %o0; \ + op %g1, %o0, %o0; \ 2: BACKOFF_SPIN(%o2, %o3, 1b); \ ENDPROC(atomic64_##op##_return);