sparc64: Stop using memory barriers for atomics and locks.

The kernel always executes in the TSO memory model now,
so none of this stuff is necessary any more.

With helpful feedback from Nick Piggin.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 3 deletions

diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index 587f8efb2e05..f0282fad632a 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -41,10 +41,8 @@ void flush_tsb_kernel_range(unsigned long start, unsigned long end)
                                               KERNEL_TSB_NENTRIES);
                 struct tsb *ent = &swapper_tsb[hash];
 
-                if (tag_compare(ent->tag, v)) {
+                if (tag_compare(ent->tag, v))
                         ent->tag = (1UL << TSB_TAG_INVALID_BIT);
-                        membar_storeload_storestore();
-                }
         }
 }