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authorAlexey Klimov <klimov.linux@gmail.com>2008-12-27 21:30:34 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-12-30 09:40:08 -0200
commitf4e9043e5a07af789ec902dada50f46d08ff8639 (patch)
tree35c83db065d0399f50dae6ecf6b224cec70e4135 /drivers
parentda3bcb5d909925397715dff4a7584f21f9857bfa (diff)
V4L/DVB (10052): radio-mr800: correct unplug, fix to previous patch
This patch corrects unplug procedure, that was implemented wrong in previous patch. New function usb_amradio_device_release added. Disconnect lock removed. 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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/radio/radio-mr800.c38
1 files changed, 19 insertions, 19 deletions
diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c
index 7b7a1cfb121..bb68148b2b6 100644
--- a/drivers/media/radio/radio-mr800.c
+++ b/drivers/media/radio/radio-mr800.c
@@ -141,7 +141,6 @@ struct amradio_device {
unsigned char *buffer;
struct mutex lock; /* buffer locking */
- struct mutex disconnect_lock;
int curfreq;
int stereo;
int users;
@@ -302,16 +301,12 @@ static void usb_amradio_disconnect(struct usb_interface *intf)
{
struct amradio_device *radio = usb_get_intfdata(intf);
- mutex_lock(&radio->disconnect_lock);
+ mutex_lock(&radio->lock);
radio->removed = 1;
- usb_set_intfdata(intf, NULL);
+ mutex_unlock(&radio->lock);
- if (radio->users == 0) {
- video_unregister_device(radio->videodev);
- kfree(radio->buffer);
- kfree(radio);
- }
- mutex_unlock(&radio->disconnect_lock);
+ usb_set_intfdata(intf, NULL);
+ video_unregister_device(radio->videodev);
}
/* vidioc_querycap - query device capabilities */
@@ -529,7 +524,7 @@ static int usb_amradio_open(struct inode *inode, struct file *file)
return 0;
}
-/*close device - free driver structures */
+/*close device */
static int usb_amradio_close(struct inode *inode, struct file *file)
{
struct amradio_device *radio = video_get_drvdata(video_devdata(file));
@@ -538,21 +533,15 @@ static int usb_amradio_close(struct inode *inode, struct file *file)
if (!radio)
return -ENODEV;
- mutex_lock(&radio->disconnect_lock);
radio->users = 0;
- if (radio->removed) {
- video_unregister_device(radio->videodev);
- kfree(radio->buffer);
- kfree(radio);
- } else {
+ if (!radio->removed) {
retval = amradio_stop(radio);
if (retval < 0)
amradio_dev_warn(&radio->videodev->dev,
"amradio_stop failed\n");
}
- mutex_unlock(&radio->disconnect_lock);
return 0;
}
@@ -609,12 +598,24 @@ static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = {
.vidioc_s_input = vidioc_s_input,
};
+static void usb_amradio_device_release(struct video_device *videodev)
+{
+ struct amradio_device *radio = video_get_drvdata(videodev);
+
+ /* we call v4l to free radio->videodev */
+ video_device_release(videodev);
+
+ /* free rest memory */
+ kfree(radio->buffer);
+ kfree(radio);
+}
+
/* V4L2 interface */
static struct video_device amradio_videodev_template = {
.name = "AverMedia MR 800 USB FM Radio",
.fops = &usb_amradio_fops,
.ioctl_ops = &usb_amradio_ioctl_ops,
- .release = video_device_release,
+ .release = usb_amradio_device_release,
};
/* check if the device is present and register with v4l and
@@ -652,7 +653,6 @@ static int usb_amradio_probe(struct usb_interface *intf,
radio->usbdev = interface_to_usbdev(intf);
radio->curfreq = 95.16 * FREQ_MUL;
- mutex_init(&radio->disconnect_lock);
mutex_init(&radio->lock);
video_set_drvdata(radio->videodev, radio);