[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>
mariux64 · Mar 19, 2008 · 4cfea5a · 4cfea5a
1 parent f0e98c3
commit 4cfea5a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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; \