From: Alexey Klimov <klimov.linux@gmail.com>
Date: Thu, 5 Feb 2009 11:57:19 +0000 (-0300)
Subject: V4L/DVB (10461): radio-mr800: add few lost mutex locks
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=52433bbbef633047838dcc5a735ee241a05234a0;p=mv-sheeva.git

V4L/DVB (10461): radio-mr800: add few lost mutex locks

Patch adds two lost mutex locks.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c
index 25ccf21c469..56f1fac6d28 100644
--- a/drivers/media/radio/radio-mr800.c
+++ b/drivers/media/radio/radio-mr800.c
@@ -431,7 +431,10 @@ static int vidioc_s_frequency(struct file *file, void *priv,
 	if (radio->removed)
 		return -EIO;
 
+	mutex_lock(&radio->lock);
 	radio->curfreq = f->frequency;
+	mutex_unlock(&radio->lock);
+
 	retval = amradio_setfreq(radio, radio->curfreq);
 	if (retval < 0)
 		amradio_dev_warn(&radio->videodev->dev,
@@ -599,7 +602,9 @@ static int usb_amradio_close(struct file *file)
 	if (!radio)
 		return -ENODEV;
 
+	mutex_lock(&radio->lock);
 	radio->users = 0;
+	mutex_unlock(&radio->lock);
 
 	if (!radio->removed) {
 		retval = amradio_set_mute(radio, AMRADIO_STOP);