PM / sleep: invalidate TEST_CPUS and TEST_CORE support for freeze state
freeze state is a software suspend state that does not run into
low-level platform callbacks which may interact with BIOS.
And freeze state does not need to disable the processors.
But the current pm_test support misleads users because users
can enter freeze state with pm_test set to TEST_CPUS/TEST_CORE,
while this pm_test setting never takes actions.
So, invalidate TEST_CPUS/TEST_CORE for freeze state in this patch.
Then users will get an error instead, when trying to
enter freeze state with pm_test mode set to TEST_CPUS/TEST_CORE.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 5eb30aa..bef86d1 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -76,8 +76,20 @@
bool valid_state(suspend_state_t state)
{
- if (state == PM_SUSPEND_FREEZE)
- return true;
+ if (state == PM_SUSPEND_FREEZE) {
+#ifdef CONFIG_PM_DEBUG
+ if (pm_test_level != TEST_NONE &&
+ pm_test_level != TEST_FREEZER &&
+ pm_test_level != TEST_DEVICES &&
+ pm_test_level != TEST_PLATFORM) {
+ printk(KERN_WARNING "Unsupported pm_test mode for "
+ "freeze state, please choose "
+ "none/freezer/devices/platform.\n");
+ return false;
+ }
+#endif
+ return true;
+ }
/*
* PM_SUSPEND_STANDBY and PM_SUSPEND_MEMORY states need lowlevel
* support and need to be valid to the lowlevel