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:
  PCI PM: Make pci_prepare_to_sleep() disable wake-up if needed
  radeonfb: Use __pci_complete_power_transition()
  PCI PM: Introduce __pci_[start|complete]_power_transition() (rev. 2)
  PCI PM: Restore config spaces of all devices during early resume
  PCI PM: Make pci_set_power_state() handle devices with no PM support
  PCI PM: Put devices into low power states during late suspend (rev. 2)
  PCI PM: Move pci_restore_standard_config to pci-driver.c
  PCI PM: Use pci_set_power_state during early resume
  PCI PM: Consistently use variable name "error" for pm call return values
  kexec: Change kexec jump code ordering
  PM: Change hibernation code ordering
  PM: Change suspend code ordering
  PM: Rework handling of interrupts during suspend-resume
  PM: Introduce functions for suspending and resuming device interrupts

arch/x86/kernel/apm_32.c

@@ -1190,8 +1190,10 @@ static int suspend(int vetoable)
 	struct apm_user	*as;
 
 	device_suspend(PMSG_SUSPEND);
-	local_irq_disable();
+
 	device_power_down(PMSG_SUSPEND);
+
+	local_irq_disable();
 	sysdev_suspend(PMSG_SUSPEND);
 
 	local_irq_enable();
@@ -1209,9 +1211,12 @@ static int suspend(int vetoable)
 	if (err != APM_SUCCESS)
 		apm_error("suspend", err);
 	err = (err == APM_SUCCESS) ? 0 : -EIO;
+
 	sysdev_resume();
-	device_power_up(PMSG_RESUME);
 	local_irq_enable();
+
+	device_power_up(PMSG_RESUME);
+
 	device_resume(PMSG_RESUME);
 	queue_event(APM_NORMAL_RESUME, NULL);
 	spin_lock(&user_list_lock);
@@ -1228,8 +1233,9 @@ static void standby(void)
 {
 	int err;
 
-	local_irq_disable();
 	device_power_down(PMSG_SUSPEND);
+
+	local_irq_disable();
 	sysdev_suspend(PMSG_SUSPEND);
 	local_irq_enable();
 
@@ -1239,8 +1245,9 @@ static void standby(void)
 
 	local_irq_disable();
 	sysdev_resume();
-	device_power_up(PMSG_RESUME);
 	local_irq_enable();
+
+	device_power_up(PMSG_RESUME);
 }
 
 static apm_event_t get_event(void)

drivers/base/power/main.c

@@ -23,6 +23,7 @@
 #include <linux/pm.h>
 #include <linux/resume-trace.h>
 #include <linux/rwsem.h>
+#include <linux/interrupt.h>
 
 #include "../base.h"
 #include "power.h"
@@ -349,7 +350,8 @@ static int resume_device_noirq(struct device *dev, pm_message_t state)
  *	Execute the appropriate "noirq resume" callback for all devices marked
  *	as DPM_OFF_IRQ.
  *
- *	Must be called with interrupts disabled and only one CPU running.
+ *	Must be called under dpm_list_mtx.  Device drivers should not receive
+ *	interrupts while it's being executed.
  */
 static void dpm_power_up(pm_message_t state)
 {
@@ -370,14 +372,13 @@ static void dpm_power_up(pm_message_t state)
  *	device_power_up - Turn on all devices that need special attention.
  *	@state: PM transition of the system being carried out.
  *
- *	Power on system devices, then devices that required we shut them down
- *	with interrupts disabled.
- *
- *	Must be called with interrupts disabled.
+ *	Call the "early" resume handlers and enable device drivers to receive
+ *	interrupts.
  */
 void device_power_up(pm_message_t state)
 {
 	dpm_power_up(state);
+	resume_device_irqs();
 }
 EXPORT_SYMBOL_GPL(device_power_up);
 
@@ -602,16 +603,17 @@ static int suspend_device_noirq(struct device *dev, pm_message_t state)
  *	device_power_down - Shut down special devices.
  *	@state: PM transition of the system being carried out.
  *
- *	Power down devices that require interrupts to be disabled.
- *	Then power down system devices.
+ *	Prevent device drivers from receiving interrupts and call the "late"
+ *	suspend handlers.
  *
- *	Must be called with interrupts disabled and only one CPU running.
+ *	Must be called under dpm_list_mtx.
  */
 int device_power_down(pm_message_t state)
 {
 	struct device *dev;
 	int error = 0;
 
+	suspend_device_irqs();
 	list_for_each_entry_reverse(dev, &dpm_list, power.entry) {
 		error = suspend_device_noirq(dev, state);
 		if (error) {
@@ -621,7 +623,7 @@ int device_power_down(pm_message_t state)
 		dev->power.status = DPM_OFF_IRQ;
 	}
 	if (error)
-		dpm_power_up(resume_event(state));
+		device_power_up(resume_event(state));
 	return error;
 }
 EXPORT_SYMBOL_GPL(device_power_down);

drivers/base/sys.c

@@ -22,6 +22,7 @@
 #include <linux/pm.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
+#include <linux/interrupt.h>
 
 #include "base.h"
 
@@ -369,6 +370,13 @@ int sysdev_suspend(pm_message_t state)
 	struct sysdev_driver *drv, *err_drv;
 	int ret;
 
+	pr_debug("Checking wake-up interrupts\n");
+
+	/* Return error code if there are any wake-up interrupts pending */
+	ret = check_wakeup_irqs();
+	if (ret)
+		return ret;
+
 	pr_debug("Suspending System Devices\n");
 
 	list_for_each_entry_reverse(cls, &system_kset->list, kset.kobj.entry) {