[SPARC64]: Fix atomic backoff limit.
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>
diff --git a/include/asm-sparc64/backoff.h b/include/asm-sparc64/backoff.h
index dadd6c3..fa1fdf6 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; \
