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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 b86040a59f.

Signed-off-by: Anders Grafström <grfstrm@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Anders Grafström 2010-03-15 16:04:14 +01:00 committed by Russell King
parent 5d8614cc5d
commit 8e4971f2fb
1 changed files with 2 additions and 0 deletions
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2
arch/arm/kernel/entry-header.S
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@ -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