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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-05-26 13:40:53 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-05-26 13:40:53 +0200 |
| commit | 43e8317b0bba1d6eb85f38a4a233d82d7c20d732 (patch) | |
| tree | 9598176b6c0c0660df93541b1bd5f4ccc5ad450c /kernel/power/main.c | |
| parent | PM / sleep: Add state field to pm_states[] entries (diff) | |
| download | linux-43e8317b0bba1d6eb85f38a4a233d82d7c20d732.tar.xz linux-43e8317b0bba1d6eb85f38a4a233d82d7c20d732.zip | |
PM / sleep: Use valid_state() for platform-dependent sleep states only
Use the observation that, for platform-dependent sleep states
(PM_SUSPEND_STANDBY, PM_SUSPEND_MEM), a given state is either
always supported or always unsupported and store that information
in pm_states[] instead of calling valid_state() every time we
need to check it.
Also do not use valid_state() for PM_SUSPEND_FREEZE, which is always
valid, and move the pm_test_level validity check for PM_SUSPEND_FREEZE
directly into enter_state().
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power/main.c')
| -rw-r--r-- | kernel/power/main.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index 8e818432253c..9f51f0ab3d86 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -296,7 +296,7 @@ static ssize_t state_show(struct kobject *kobj, struct kobj_attribute *attr, suspend_state_t i; for (i = PM_SUSPEND_MIN; i < PM_SUSPEND_MAX; i++) - if (valid_state(i)) + if (pm_states[i].state) s += sprintf(s,"%s ", pm_states[i].label); #endif @@ -328,8 +328,9 @@ static suspend_state_t decode_state(const char *buf, size_t n) #ifdef CONFIG_SUSPEND for (s = &pm_states[state]; state < PM_SUSPEND_MAX; s++, state++) - if (len == strlen(s->label) && !strncmp(buf, s->label, len)) - return state; + if (s->state && len == strlen(s->label) + && !strncmp(buf, s->label, len)) + return s->state; #endif return PM_SUSPEND_ON; @@ -447,7 +448,7 @@ static ssize_t autosleep_show(struct kobject *kobj, #ifdef CONFIG_SUSPEND if (state < PM_SUSPEND_MAX) - return sprintf(buf, "%s\n", valid_state(state) ? + return sprintf(buf, "%s\n", pm_states[state].state ? pm_states[state].label : "error"); #endif #ifdef CONFIG_HIBERNATION |