[SPARC64]: Fix incorrect TSB lock bit handling.

The TSB_LOCK_BIT define is actually a special
value shifted down by 32-bits for the assembler
code macros.

In C code, this isn't what we want.

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

2 files changed, 4 insertions, 3 deletions

diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index 707af4b84a..e605478217 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -184,7 +184,7 @@ static void copy_tsb(struct tsb *old_tsb, unsigned long old_size,
                         : "=r" (tag), "=r" (pte)
                         : "r" (&old_tsb[i]), "i" (ASI_NUCLEUS_QUAD_LDD));
 
-                if (!tag || (tag & TSB_TAG_LOCK))
+                if (!tag || (tag & (1UL << TSB_TAG_LOCK_BIT)))
                         continue;
 
                 /* We only put base page size PTEs into the TSB,
diff --git a/include/asm-sparc64/tsb.h b/include/asm-sparc64/tsb.h
index 1f93b7d8cd..09ab3aaa8d 100644
--- a/include/asm-sparc64/tsb.h
+++ b/include/asm-sparc64/tsb.h
@@ -47,13 +47,14 @@
  * possible solution is to use RCU for the freeing of the TSB.
  */
 
-#define TSB_TAG_LOCK    (1 << (47 - 32))
+#define TSB_TAG_LOCK_BIT        47
+#define TSB_TAG_LOCK_HIGH       (1 << (TSB_TAG_LOCK_BIT - 32))
 
 #define TSB_MEMBAR      membar  #StoreStore
 
 #define TSB_LOCK_TAG(TSB, REG1, REG2)   \
 99:     lduwa   [TSB] ASI_N, REG1;      \
-        sethi   %hi(TSB_TAG_LOCK), REG2;\
+        sethi   %hi(TSB_TAG_LOCK_HIGH), REG2;\
         andcc   REG1, REG2, %g0;        \
         bne,pn  %icc, 99b;              \
          nop;                           \