diff options
| author | Mario Limonciello (AMD) <superm1@kernel.org> | 2025-09-25 13:51:07 -0500 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-09-25 21:36:05 +0200 |
| commit | 495c8d35035edb66e3284113bef01f3b1b843832 (patch) | |
| tree | a3d8468f76229955cdc8adcc20e6ed4a87aaa7f4 /kernel/power | |
| parent | 469d80a3712c66a00b5bb888e62e809db8887ba7 (diff) | |
PM: hibernate: Add pm_hibernation_mode_is_suspend()
Some drivers have different flows for hibernation and suspend. If
the driver opportunistically will skip thaw() then it needs a hint
to know what is happening after the hibernate.
Introduce a new symbol pm_hibernation_mode_is_suspend() that drivers
can call to determine if suspending the system for this purpose.
Tested-by: Ionut Nechita <ionut_n2001@yahoo.com>
Tested-by: Kenneth Crudup <kenny@panix.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/hibernate.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index e0cdb8d9fd45..5d146218cae8 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -80,6 +80,17 @@ static const struct platform_hibernation_ops *hibernation_ops; static atomic_t hibernate_atomic = ATOMIC_INIT(1); +#ifdef CONFIG_SUSPEND +/** + * pm_hibernation_mode_is_suspend - Check if hibernation has been set to suspend + */ +bool pm_hibernation_mode_is_suspend(void) +{ + return hibernation_mode == HIBERNATION_SUSPEND; +} +EXPORT_SYMBOL_GPL(pm_hibernation_mode_is_suspend); +#endif + bool hibernate_acquire(void) { return atomic_add_unless(&hibernate_atomic, -1, 0); |