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| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-07-18 03:19:25 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-07-22 03:30:15 +0300 |
| commit | bd8c9ba3b1e2037af5af4e48aea1087212838179 (patch) | |
| tree | 72917568ecaf4569ac95294d832b006ca1410824 /kernel/power | |
| parent | 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff) | |
| download | linux-bd8c9ba3b1e2037af5af4e48aea1087212838179.tar.xz | |
PM / suspend: Export pm_suspend_target_state
Have the core suspend/resume framework store the system-wide suspend
state (suspend_state_t) we are about to enter, and expose it to drivers
via pm_suspend_target_state in order to retrieve that. The state is
assigned in suspend_devices_and_enter().
This is useful for platform specific drivers that may need to take a
slightly different suspend/resume path based on the system's
suspend/resume state being entered.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/suspend.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 3ecf275d7e44..d0c0b96c2383 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -47,6 +47,8 @@ const char *mem_sleep_states[PM_SUSPEND_MAX]; suspend_state_t mem_sleep_current = PM_SUSPEND_FREEZE; static suspend_state_t mem_sleep_default = PM_SUSPEND_MEM; +suspend_state_t pm_suspend_target_state; +EXPORT_SYMBOL_GPL(pm_suspend_target_state); unsigned int pm_suspend_global_flags; EXPORT_SYMBOL_GPL(pm_suspend_global_flags); @@ -456,6 +458,8 @@ int suspend_devices_and_enter(suspend_state_t state) if (!sleep_state_supported(state)) return -ENOSYS; + pm_suspend_target_state = state; + error = platform_suspend_begin(state); if (error) goto Close; @@ -485,6 +489,7 @@ int suspend_devices_and_enter(suspend_state_t state) Close: platform_resume_end(state); + pm_suspend_target_state = PM_SUSPEND_ON; return error; Recover_platform: |