diff options
Diffstat (limited to 'linux/drivers/media')
| -rw-r--r-- | linux/drivers/media/radio/dsbr100.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/linux/drivers/media/radio/dsbr100.c b/linux/drivers/media/radio/dsbr100.c index 0516711f8..155a75341 100644 --- a/linux/drivers/media/radio/dsbr100.c +++ b/linux/drivers/media/radio/dsbr100.c @@ -455,7 +455,10 @@ 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 = dsbr100_setfreq(radio, radio->curfreq); if (retval < 0) dev_warn(&radio->usbdev->dev, "Set frequency failed\n"); @@ -606,7 +609,10 @@ static int usb_dsbr100_close(struct file *file) if (!radio) return -ENODEV; + mutex_lock(&radio->lock); radio->users = 0; + mutex_unlock(&radio->lock); + if (!radio->removed) { retval = dsbr100_stop(radio); if (retval < 0) { |