Commit 16669bef authored by Strashko, Grygorii's avatar Strashko, Grygorii Committed by Rafael J. Wysocki
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PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs



Now wakeirq stops working for device if wakeup option for
this device will be reconfigured through sysfs, like:

echo disabled > /sys/devices/platform/extcon_usb1/power/wakeup
echo enabled > /sys/devices/platform/extcon_usb1/power/wakeup

Once above set of commands is executed the device's wakeup_source
opject will be recreated and dev->power.wakeup->wakeirq field will
contain NULL. As result, device_wakeup_arm_wake_irqs() will not arm
wakeirq for the affected device.

Hece, lets try to fix it in the following way:
  check for dev->wakeirq field when device_wakeup_attach() is called
  and if !NULL re-attach wakeirq to the device

Signed-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 8fd2910e
...@@ -246,6 +246,8 @@ static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws) ...@@ -246,6 +246,8 @@ static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws)
return -EEXIST; return -EEXIST;
} }
dev->power.wakeup = ws; dev->power.wakeup = ws;
if (dev->power.wakeirq)
device_wakeup_attach_irq(dev, dev->power.wakeirq);
spin_unlock_irq(&dev->power.lock); spin_unlock_irq(&dev->power.lock);
return 0; return 0;
} }
......
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