[MIPS] Fix kgdb exception handler from user mode.

    
Fix a calculation of saved vector address in trap_low.
    
(damage done by lmo f4c72cc737561aab0d9c7f877abbc0a853f1c465)
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/mips/kernel/gdb-low.S b/arch/mips/kernel/gdb-low.S
index 10f28fb9f008..5fd7a8af0c62 100644
--- a/arch/mips/kernel/gdb-low.S
+++ b/arch/mips/kernel/gdb-low.S
@@ -54,9 +54,11 @@
                  */
                 mfc0    k0, CP0_CAUSE
                 andi    k0, k0, 0x7c
-                add     k1, k1, k0
-                PTR_L   k0, saved_vectors(k1)
-                jr      k0
+#ifdef CONFIG_64BIT
+                dsll    k0, k0, 1
+#endif
+                PTR_L   k1, saved_vectors(k0)
+                jr      k1
                 nop
 1:
                 move    k0, sp