ARM: 5991/1: Fix regression in restore_user_regs macro

ARMv5T and earlier require that a ldm {}^ instruction is not followed
by an instruction that accesses banked registers. This patch restores
the nop that was lost in commit b86040a59feb255a8193173caa4d5199464433d5.

Signed-off-by: Anders Grafström <grfstrm@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 7e9ed1eea40a..d93f976fb389 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -102,6 +102,8 @@
         .else
         ldmdb   sp, {r0 - lr}^                  @ get calling r0 - lr
         .endif
+        mov     r0, r0                          @ ARMv5T and earlier require a nop
+                                                @ after ldm {}^
         add     sp, sp, #S_FRAME_SIZE - S_PC
         movs    pc, lr                          @ return & move spsr_svc into cpsr
         .endm