linux-kernel - [PATCH 2/2] extcon: palmas: Don't miss GPIO events during suspend/resume

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Date:   Wed, 15 Feb 2017 14:31:29 +0200
From:   Roger Quadros <rogerq@...com>
To:     <cw00.choi@...sung.com>, <myungjoo.ham@...sung.com>
CC:     <grygorii.strashko@...com>, <linux-kernel@...r.kernel.org>,
        Roger Quadros <rogerq@...com>
Subject: [PATCH 2/2] extcon: palmas: Don't miss GPIO events during suspend/resume

The USB cable state can change during suspend/resume
so be sure to check and update the extcon state.

Signed-off-by: Roger Quadros <rogerq@...com>
---
 drivers/extcon/extcon-palmas.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 634ba70..97bacb4 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -408,6 +408,12 @@ static int palmas_usb_resume(struct device *dev)
 		if (palmas_usb->enable_gpio_id_detection)
 			disable_irq_wake(palmas_usb->gpio_id_irq);
 	}
+
+	/* check if GPIO states changed while suspend/resume */
+	if (palmas_usb->enable_gpio_vbus_detection)
+		palmas_vbus_irq_handler(palmas_usb->gpio_vbus_irq, palmas_usb);
+	palmas_gpio_id_detect(&palmas_usb->wq_detectid.work);
+
 	return 0;
 };
 #endif
-- 
2.7.4