Commit 16669bef authored by Strashko, Grygorii's avatar Strashko, Grygorii Committed by Rafael J. Wysocki
Browse files

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 <>
Acked-by: default avatarTony Lindgren <>
Signed-off-by: default avatarRafael J. Wysocki <>
parent 8fd2910e
......@@ -246,6 +246,8 @@ static int device_wakeup_attach(struct device *dev, struct wakeup_source *ws)
return -EEXIST;
dev->power.wakeup = ws;
if (dev->power.wakeirq)
device_wakeup_attach_irq(dev, dev->power.wakeirq);
return 0;
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment