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authorFlorian Fainelli <f.fainelli@gmail.com>2017-07-18 03:19:25 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-07-22 03:30:15 +0300
commitbd8c9ba3b1e2037af5af4e48aea1087212838179 (patch)
tree72917568ecaf4569ac95294d832b006ca1410824 /kernel/power/suspend.c
parent5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff)
downloadlinux-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/suspend.c')
-rw-r--r--kernel/power/suspend.c5
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: