From: zwp <zwp@rock-chips.com>
Date: Thu, 12 Jul 2012 02:11:07 +0000 (+0800)
Subject: solve gsensor deadlock problem.
X-Git-Tag: firefly_0821_release~9014
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=33af2d2d144d88aa60835e7422be1990aebb1e55;p=firefly-linux-kernel-4.4.55.git

solve gsensor deadlock problem.
---

diff --git a/drivers/input/sensors/sensor-dev.c b/drivers/input/sensors/sensor-dev.c
index 3b20fcbb33ff..2dc9b8676d52 100755
--- a/drivers/input/sensors/sensor-dev.c
+++ b/drivers/input/sensors/sensor-dev.c
@@ -447,8 +447,10 @@ static long gsensor_dev_ioctl(struct file *file,
 		DBG("%s:GSENSOR_IOCTL_APP_SET_RATE start\n", __func__);		
 		mutex_lock(&sensor->operation_mutex);	
 		result = sensor_reset_rate(client, rate);
-		if (result < 0)
-		goto error;
+		if (result < 0){
+			mutex_unlock(&sensor->operation_mutex);
+			goto error;
+		}
 		if(sensor->status_cur == SENSOR_OFF)
 		{		
 			if(sensor->pdata->irq_enable)