1 files changed, 1 insertions, 1 deletions

diff --git a/arch/parisc/include/asm/cmpxchg.h b/arch/parisc/include/asm/cmpxchg.h
index 068958575871..a736dc59bbef 100644
--- a/arch/parisc/include/asm/cmpxchg.h
+++ b/arch/parisc/include/asm/cmpxchg.h
@@ -72,7 +72,7 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size)
 #endif
         case 4: return __cmpxchg_u32((unsigned int *)ptr,
                                      (unsigned int)old, (unsigned int)new_);
-        case 1: return __cmpxchg_u8((u8 *)ptr, (u8)old, (u8)new_);
+        case 1: return __cmpxchg_u8((u8 *)ptr, old & 0xff, new_ & 0xff);
         }
         __cmpxchg_called_with_bad_pointer();
         return old;