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ARM: pxa: only save/restore registers when pm functions are defined

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Reported-and-tested-by: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
This commit is contained in:
Eric Miao 2011-01-26 05:04:00 +08:00
parent 57834a7224
commit 3d9cb0eafd
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mach-pxa/pm.c
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@ -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];