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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-22 16:01:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-22 16:01:57 -0700
commit431bf99d26157d56689e5de65bd27ce9f077fc3f (patch)
treeb15e357039956fcdd0e0e6177d2fc99bb3cfa822 /kernel
parent72f96e0e38d7e29ba16dcfd824ecaebe38b8293e (diff)
parent7ae033cc0dfce68d8e0c83aca60837cf2bf0d2e6 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (51 commits) PM: Improve error code of pm_notifier_call_chain() PM: Add "RTC" to PM trace time stamps to avoid confusion PM / Suspend: Export suspend_set_ops, suspend_valid_only_mem PM / Suspend: Add .suspend_again() callback to suspend_ops PM / OPP: Introduce function to free cpufreq table ARM / shmobile: Return -EBUSY from A4LC power off if A3RV is active PM / Domains: Take .power_off() error code into account ARM / shmobile: Use genpd_queue_power_off_work() ARM / shmobile: Use pm_genpd_poweroff_unused() PM / Domains: Introduce function to power off all unused PM domains OMAP: PM: disable idle on suspend for GPIO and UART OMAP: PM: omap_device: add API to disable idle on suspend OMAP: PM: omap_device: add system PM methods for PM domain handling OMAP: PM: omap_device: conditionally use PM domain runtime helpers PM / Runtime: Add new helper function: pm_runtime_status_suspended() PM / Domains: Queue up power off work only if it is not pending PM / Domains: Improve handling of wakeup devices during system suspend PM / Domains: Do not restore all devices on power off error PM / Domains: Allow callbacks to execute all runtime PM helpers PM / Domains: Do not execute device callbacks under locks ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/Kconfig8
-rw-r--r--kernel/power/main.c5
-rw-r--r--kernel/power/suspend.c20
3 files changed, 23 insertions, 10 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 87f4d24b55b0..7b856b3458d2 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -224,6 +224,10 @@ config PM_OPP
implementations a ready to use framework to manage OPPs.
For more information, read <file:Documentation/power/opp.txt>
-config PM_RUNTIME_CLK
+config PM_CLK
def_bool y
- depends on PM_RUNTIME && HAVE_CLK
+ depends on PM && HAVE_CLK
+
+config PM_GENERIC_DOMAINS
+ bool
+ depends on PM
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 2981af4ce7cb..6c601f871964 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -37,8 +37,9 @@ EXPORT_SYMBOL_GPL(unregister_pm_notifier);
int pm_notifier_call_chain(unsigned long val)
{
- return (blocking_notifier_call_chain(&pm_chain_head, val, NULL)
- == NOTIFY_BAD) ? -EINVAL : 0;
+ int ret = blocking_notifier_call_chain(&pm_chain_head, val, NULL);
+
+ return notifier_to_errno(ret);
}
/* If set, devices may be suspended and resumed asynchronously. */
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 1c41ba215419..b6b71ad2208f 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -44,6 +44,7 @@ void suspend_set_ops(const struct platform_suspend_ops *ops)
suspend_ops = ops;
mutex_unlock(&pm_mutex);
}
+EXPORT_SYMBOL_GPL(suspend_set_ops);
bool valid_state(suspend_state_t state)
{
@@ -65,6 +66,7 @@ int suspend_valid_only_mem(suspend_state_t state)
{
return state == PM_SUSPEND_MEM;
}
+EXPORT_SYMBOL_GPL(suspend_valid_only_mem);
static int suspend_test(int level)
{
@@ -126,12 +128,13 @@ void __attribute__ ((weak)) arch_suspend_enable_irqs(void)
}
/**
- * suspend_enter - enter the desired system sleep state.
- * @state: state to enter
+ * suspend_enter - enter the desired system sleep state.
+ * @state: State to enter
+ * @wakeup: Returns information that suspend should not be entered again.
*
- * This function should be called after devices have been suspended.
+ * This function should be called after devices have been suspended.
*/
-static int suspend_enter(suspend_state_t state)
+static int suspend_enter(suspend_state_t state, bool *wakeup)
{
int error;
@@ -165,7 +168,8 @@ static int suspend_enter(suspend_state_t state)
error = syscore_suspend();
if (!error) {
- if (!(suspend_test(TEST_CORE) || pm_wakeup_pending())) {
+ *wakeup = pm_wakeup_pending();
+ if (!(suspend_test(TEST_CORE) || *wakeup)) {
error = suspend_ops->enter(state);
events_check_enabled = false;
}
@@ -199,6 +203,7 @@ static int suspend_enter(suspend_state_t state)
int suspend_devices_and_enter(suspend_state_t state)
{
int error;
+ bool wakeup = false;
if (!suspend_ops)
return -ENOSYS;
@@ -220,7 +225,10 @@ int suspend_devices_and_enter(suspend_state_t state)
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
- error = suspend_enter(state);
+ do {
+ error = suspend_enter(state, &wakeup);
+ } while (!error && !wakeup
+ && suspend_ops->suspend_again && suspend_ops->suspend_again());
Resume_devices:
suspend_test_start();