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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-06-13 15:04:14 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-06-24 08:47:29 +0100 |
| commit | 5fa94c812c0001ac7c3d8868e956ec514734a352 (patch) | |
| tree | ec1196e56475336c419335251dc483aba5de5d91 /arch/arm/kernel/sleep.S | |
| parent | 3fd431bd0cbc75a506b90b42619de3b04fe813a7 (diff) | |
| download | lwn-5fa94c812c0001ac7c3d8868e956ec514734a352.tar.gz lwn-5fa94c812c0001ac7c3d8868e956ec514734a352.zip | |
ARM: pm: preserve r4 - r11 across a suspend
Make cpu_suspend()..return function preserve r4 to r11 across a suspend
cycle. This is in preparation of relieving platform support code from
this task.
Acked-by: Frank Hofmann <frank.hofmann@tomtom.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/sleep.S')
| -rw-r--r-- | arch/arm/kernel/sleep.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S index 0a778c30859b..8dbca93417ff 100644 --- a/arch/arm/kernel/sleep.S +++ b/arch/arm/kernel/sleep.S @@ -12,10 +12,11 @@ * r1 = v:p offset * r3 = virtual return function * Note: sp is decremented to allocate space for CPU state on stack - * r0-r3,r9,r10,lr corrupted + * r0-r3,ip,lr corrupted */ ENTRY(cpu_suspend) stmfd sp!, {r3} + stmfd sp!, {r4 - r11} mov r9, lr #ifdef MULTI_CPU ldr r10, =processor @@ -88,7 +89,7 @@ ENDPROC(cpu_resume_turn_mmu_on) cpu_resume_after_mmu: str r5, [r2, r4, lsl #2] @ restore old mapping mcr p15, 0, r0, c1, c0, 0 @ turn on D-cache - ldmfd sp!, {pc} + ldmfd sp!, {r4 - r11, pc} ENDPROC(cpu_resume_after_mmu) /* |