[linux-pm] [PATCH 7/10 v6] PM / Domains: Don't stop wakeup devices during system sleep transitions

[Rafael J. Wysocki]

From: Rafael J. Wysocki <rjw at sisk.pl>

Devices that are set up to wake up the system from sleep states
should not be stopped and power should not be removed from them
when the system goes into a sleep state.  Make the generic PM domain
code respect that limitation.

Signed-off-by: Rafael J. Wysocki <rjw at sisk.pl>
---
 drivers/base/power/domain.c |    6 ++++++
 1 file changed, 6 insertions(+)

Index: linux-2.6/drivers/base/power/domain.c
===================================================================
--- linux-2.6.orig/drivers/base/power/domain.c
+++ linux-2.6/drivers/base/power/domain.c
@@ -445,6 +445,9 @@ static int pm_genpd_suspend_noirq(struct
 	if (ret)
 		return ret;
 
+	if (device_may_wakeup(dev))
+		return 0;
+
 	if (genpd->stop_device)
 		genpd->stop_device(dev);
 
@@ -665,6 +668,9 @@ static int pm_genpd_dev_poweroff_noirq(s
 	if (ret)
 		return ret;
 
+	if (device_may_wakeup(dev))
+		return 0;
+
 	if (genpd->stop_device)
 		genpd->stop_device(dev);