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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-10-22 18:53:43 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-10-26 16:52:58 +0300 |
| commit | 9f6abfcd67aae51374b4e8aa0b11f0ebd0d8562f (patch) | |
| tree | 8ecb86974b41d863bc96629eaab3085b2156d154 /kernel/power/suspend.c | |
| parent | 23f62d7ab25bd1a7dbbb89cfcd429df7735855af (diff) | |
| download | linux-9f6abfcd67aae51374b4e8aa0b11f0ebd0d8562f.tar.xz | |
PM: suspend: Use valid_state() consistently
Make valid_state() check if the ->enter callback is present in
suspend_ops (only PM_SUSPEND_TO_IDLE can be valid otherwise) and
make sleep_state_supported() call valid_state() consistently to
validate the states other than PM_SUSPEND_TO_IDLE.
While at it, clean up the comment in valid_state().
No expected functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power/suspend.c')
| -rw-r--r-- | kernel/power/suspend.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 8bea835ef1fa..80cc1f0f502b 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -160,11 +160,13 @@ EXPORT_SYMBOL_GPL(s2idle_wake); static bool valid_state(suspend_state_t state) { /* - * PM_SUSPEND_STANDBY and PM_SUSPEND_MEM states need low level - * support and need to be valid to the low level - * implementation, no valid callback implies that none are valid. + * The PM_SUSPEND_STANDBY and PM_SUSPEND_MEM states require low-level + * support and need to be valid to the low-level implementation. + * + * No ->valid() or ->enter() callback implies that none are valid. */ - return suspend_ops && suspend_ops->valid && suspend_ops->valid(state); + return suspend_ops && suspend_ops->valid && suspend_ops->valid(state) && + suspend_ops->enter; } void __init pm_states_init(void) @@ -236,7 +238,7 @@ EXPORT_SYMBOL_GPL(suspend_valid_only_mem); static bool sleep_state_supported(suspend_state_t state) { - return state == PM_SUSPEND_TO_IDLE || (suspend_ops && suspend_ops->enter); + return state == PM_SUSPEND_TO_IDLE || valid_state(state); } static int platform_suspend_prepare(suspend_state_t state) |