[PATCH 4.4 024/131] extcon: usb-gpio: Dont miss event during suspend/resume

[Greg Kroah-Hartman]

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Roger Quadros <rogerq@xxxxxx>

commit 04c080080855ce84dcd490a2e04805608a21085d upstream.

Pin state might have changed during suspend/resume while
our interrupts were disabled and if device doesn't support wakeup.

Scan for change during resume for such case.

Signed-off-by: Roger Quadros <rogerq@xxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/extcon/extcon-usb-gpio.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -192,6 +192,9 @@ static int usb_extcon_resume(struct devi
 	}
 
 	enable_irq(info->id_irq);
+	if (!device_may_wakeup(dev))
+		queue_delayed_work(system_power_efficient_wq,
+				   &info->wq_detcable, 0);
 
 	return ret;
 }