[SPARC64]: Fix fault handling in unaligned trap handler.

We were not calling kernel_mna_trap_fault() correctly.
Instead of being fancy, just return 0 vs. -EFAULT from
the assembler stubs, and handle that return value as
appropriate.

Create an "__retl_efault" stub for assembler exception
table entries and use it where possible.

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

1 files changed, 6 insertions, 10 deletions

diff --git a/arch/sparc64/lib/strncpy_from_user.S b/arch/sparc64/lib/strncpy_from_user.S
index 09cbbaa0ebf4..e1264650ca7a 100644
--- a/arch/sparc64/lib/strncpy_from_user.S
+++ b/arch/sparc64/lib/strncpy_from_user.S
@@ -125,15 +125,11 @@ __strncpy_from_user:
          add    %o2, %o3, %o0
         .size   __strncpy_from_user, .-__strncpy_from_user
 
-        .section .fixup,#alloc,#execinstr
-        .align  4
-4:      retl
-         mov    -EFAULT, %o0
-
         .section __ex_table,#alloc
         .align  4
-        .word   60b, 4b
-        .word   61b, 4b
-        .word   62b, 4b
-        .word   63b, 4b
-        .word   64b, 4b
+        .word   60b, __retl_efault
+        .word   61b, __retl_efault
+        .word   62b, __retl_efault
+        .word   63b, __retl_efault
+        .word   64b, __retl_efault
+        .previous