[MIPS] Don't use R10000 llsc workaround version for all llsc-full processors.

Found and original patch by bile@landofbile.com.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h
index dcb4701d572831fe8e7f781d364bd4a524f2b39c..3056feed5a367bcee7f47ec346f3ee62415c6abd 100644 (file)
--- a/include/asm-mips/system.h
+++ b/include/asm-mips/system.h
@@ -392,7 +392,7 @@ static inline unsigned long __cmpxchg_u64(volatile int * m, unsigned long old,
 {
        __u64 retval;
 
-       if (cpu_has_llsc) {
+       if (cpu_has_llsc && R10000_LLSC_WAR) {
                __asm__ __volatile__(
                "       .set    push                                    \n"
                "       .set    noat                                    \n"