From 3d9cb0eafd024d6fc1b1583ff9b17e5f60951fd9 Mon Sep 17 00:00:00 2001
From: Eric Miao <eric.y.miao@gmail.com>
Date: Wed, 26 Jan 2011 05:04:00 +0800
Subject: [PATCH] ARM: pxa: only save/restore registers when pm functions are
defined
Reported-and-tested-by: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
---
arch/arm/mach-pxa/pm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c
index 978e1b289544..1807c9abdde0 100644
--- a/arch/arm/mach-pxa/pm.c
+++ b/arch/arm/mach-pxa/pm.c
@@ -33,7 +33,7 @@ int pxa_pm_enter(suspend_state_t state)
#endif
/* skip registers saving for standby */
- if (state != PM_SUSPEND_STANDBY) {
+ if (state != PM_SUSPEND_STANDBY && pxa_cpu_pm_fns->save) {
pxa_cpu_pm_fns->save(sleep_save);
/* before sleeping, calculate and save a checksum */
for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
@@ -44,7 +44,7 @@ int pxa_pm_enter(suspend_state_t state)
pxa_cpu_pm_fns->enter(state);
cpu_init();
- if (state != PM_SUSPEND_STANDBY) {
+ if (state != PM_SUSPEND_STANDBY && pxa_cpu_pm_fns->restore) {
/* after sleeping, validate the checksum */
for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++)
checksum += sleep_save[i];