diff options
Diffstat (limited to 'kernel/power/main.c')
| -rw-r--r-- | kernel/power/main.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index 71aa0fd22007..18d7d693fbba 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -143,11 +143,12 @@ static void suspend_finish(suspend_state_t state) -static char * pm_states[] = { +static char *pm_states[PM_SUSPEND_MAX] = { [PM_SUSPEND_STANDBY] = "standby", [PM_SUSPEND_MEM] = "mem", +#ifdef CONFIG_SOFTWARE_SUSPEND [PM_SUSPEND_DISK] = "disk", - NULL, +#endif }; @@ -166,6 +167,8 @@ static int enter_state(suspend_state_t state) { int error; + if (pm_ops->valid && !pm_ops->valid(state)) + return -ENODEV; if (down_trylock(&pm_sem)) return -EBUSY; @@ -235,7 +238,8 @@ static ssize_t state_show(struct subsystem * subsys, char * buf) char * s = buf; for (i = 0; i < PM_SUSPEND_MAX; i++) { - if (pm_states[i]) + if (pm_states[i] && pm_ops && (!pm_ops->valid + ||(pm_ops->valid && pm_ops->valid(i)))) s += sprintf(s,"%s ",pm_states[i]); } s += sprintf(s,"\n"); |