linux-kernel - [PATCH v2] extcon: usb-gpio: Don't miss event during suspend/resume

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Date:	Fri, 8 Apr 2016 10:34:59 +0300
From:	Roger Quadros <rogerq@...com>
To:	<myungjoo.ham@...sung.com>, <cw00.choi@...sung.com>
CC:	<linux-kernel@...r.kernel.org>,
	Grygorii Strashko <grygorii.strashko@...com>, <rogerq@...com>
Subject: [PATCH v2] extcon: usb-gpio: Don't miss event during suspend/resume

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@...com>
---
v2:
- only check for state change during resume if device wakeup is not supported

 drivers/extcon/extcon-usb-gpio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/extcon/extcon-usb-gpio.c b/drivers/extcon/extcon-usb-gpio.c
index bc61d11..118f8ab 100644
--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -185,6 +185,8 @@ static int usb_extcon_resume(struct device *dev)
 	int ret = 0;
 
 	enable_irq(info->id_irq);
+	if (!device_may_wakeup(dev))
+		usb_extcon_detect_cable(&info->wq_detcable.work);
 
 	return ret;
 }
-- 
2.5.0