diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2013-03-27 03:36:11 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-04-05 14:18:25 +0200 |
| commit | c26b78a2d826a89cd689527493a2bea22af46133 (patch) | |
| tree | 313eef7849770d228a76b28abad16c55def1ea26 /kernel/power | |
| parent | 08605acc7e3b7974e309d73ddf39ee9464d95e51 (diff) | |
| download | linux-c26b78a2d826a89cd689527493a2bea22af46133.tar.bz2 | |
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>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/suspend.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 5eb30aab9b99..bef86d121eb2 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -76,8 +76,20 @@ EXPORT_SYMBOL_GPL(suspend_set_ops); 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 |