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authorDavid S. Miller <davem@davemloft.net>2008-04-07 00:25:20 -0700
committerChris Wright <chrisw@sous-sol.org>2008-04-18 18:53:27 -0700
commitd08242303cea836fd2587d776e5c743b3e02ae2a (patch)
tree383ca3830855ae4296896e0e11e10daae66742c3
parent1814e31332384ae44b9ed55f0393faacfa52f02a (diff)
SPARC64: Fix atomic backoff limit.
Upstream commit: 4cfea5a7dfcc2766251e50ca30271a782d5004ad 4096 will not fit into the immediate field of a compare instruction, in fact it will end up being -4096 causing the check to fail every time and thus disabling backoff. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
-rw-r--r--include/asm-sparc64/backoff.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-sparc64/backoff.h b/include/asm-sparc64/backoff.h
index dadd6c385c6c..fa1fdf67e350 100644
--- a/include/asm-sparc64/backoff.h
+++ b/include/asm-sparc64/backoff.h
@@ -12,7 +12,8 @@
mov reg, tmp; \
88: brnz,pt tmp, 88b; \
sub tmp, 1, tmp; \
- cmp reg, BACKOFF_LIMIT; \
+ set BACKOFF_LIMIT, tmp; \
+ cmp reg, tmp; \
bg,pn %xcc, label; \
nop; \
ba,pt %xcc, label; \