[media] dsbr100: convert to unlocked_ioctl
Use core-assisted locking so .ioctl can be replaced by .unlocked_ioctl. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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2335e2b817
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@ -148,7 +148,7 @@ struct dsbr100_device {
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struct v4l2_device v4l2_dev;
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u8 *transfer_buffer;
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struct mutex lock; /* buffer locking */
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struct mutex v4l2_lock;
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int curfreq;
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int stereo;
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int removed;
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@ -182,8 +182,6 @@ static int dsbr100_start(struct dsbr100_device *radio)
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int retval;
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int request;
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mutex_lock(&radio->lock);
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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@ -207,11 +205,9 @@ static int dsbr100_start(struct dsbr100_device *radio)
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}
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radio->status = STARTED;
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mutex_unlock(&radio->lock);
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return (radio->transfer_buffer)[0];
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usb_control_msg_failed:
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mutex_unlock(&radio->lock);
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, request);
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@ -225,8 +221,6 @@ static int dsbr100_stop(struct dsbr100_device *radio)
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int retval;
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int request;
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mutex_lock(&radio->lock);
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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@ -250,11 +244,9 @@ static int dsbr100_stop(struct dsbr100_device *radio)
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}
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radio->status = STOPPED;
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mutex_unlock(&radio->lock);
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return (radio->transfer_buffer)[0];
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usb_control_msg_failed:
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mutex_unlock(&radio->lock);
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, request);
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@ -269,8 +261,6 @@ static int dsbr100_setfreq(struct dsbr100_device *radio)
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int request;
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int freq = (radio->curfreq / 16 * 80) / 1000 + 856;
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mutex_lock(&radio->lock);
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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DSB100_TUNE,
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@ -306,12 +296,10 @@ static int dsbr100_setfreq(struct dsbr100_device *radio)
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}
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radio->stereo = !((radio->transfer_buffer)[0] & 0x01);
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mutex_unlock(&radio->lock);
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return (radio->transfer_buffer)[0];
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usb_control_msg_failed:
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radio->stereo = -1;
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mutex_unlock(&radio->lock);
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, request);
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@ -324,8 +312,6 @@ static void dsbr100_getstat(struct dsbr100_device *radio)
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{
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int retval;
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mutex_lock(&radio->lock);
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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@ -340,33 +326,8 @@ static void dsbr100_getstat(struct dsbr100_device *radio)
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} else {
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radio->stereo = !(radio->transfer_buffer[0] & 0x01);
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}
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mutex_unlock(&radio->lock);
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}
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/* USB subsystem interface begins here */
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/*
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* Handle unplugging of the device.
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* We call video_unregister_device in any case.
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* The last function called in this procedure is
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* usb_dsbr100_video_device_release
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*/
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static void usb_dsbr100_disconnect(struct usb_interface *intf)
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{
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struct dsbr100_device *radio = usb_get_intfdata(intf);
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usb_set_intfdata (intf, NULL);
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mutex_lock(&radio->lock);
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radio->removed = 1;
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mutex_unlock(&radio->lock);
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video_unregister_device(&radio->videodev);
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v4l2_device_disconnect(&radio->v4l2_dev);
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}
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *v)
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{
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@ -432,9 +393,7 @@ static int vidioc_s_frequency(struct file *file, void *priv,
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if (radio->removed)
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return -EIO;
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mutex_lock(&radio->lock);
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radio->curfreq = f->frequency;
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mutex_unlock(&radio->lock);
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retval = dsbr100_setfreq(radio);
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if (retval < 0)
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@ -548,12 +507,36 @@ static int vidioc_s_audio(struct file *file, void *priv,
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return 0;
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}
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/* USB subsystem interface begins here */
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/*
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* Handle unplugging of the device.
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* We call video_unregister_device in any case.
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* The last function called in this procedure is
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* usb_dsbr100_video_device_release
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*/
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static void usb_dsbr100_disconnect(struct usb_interface *intf)
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{
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struct dsbr100_device *radio = usb_get_intfdata(intf);
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usb_set_intfdata(intf, NULL);
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mutex_lock(&radio->v4l2_lock);
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radio->removed = 1;
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mutex_unlock(&radio->v4l2_lock);
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video_unregister_device(&radio->videodev);
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v4l2_device_disconnect(&radio->v4l2_dev);
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}
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/* Suspend device - stop device. */
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static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message)
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{
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struct dsbr100_device *radio = usb_get_intfdata(intf);
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int retval;
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mutex_lock(&radio->v4l2_lock);
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if (radio->status == STARTED) {
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retval = dsbr100_stop(radio);
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if (retval < 0)
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@ -564,11 +547,9 @@ static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message)
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* we set status equal to STARTED.
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* On resume we will check status and run radio if needed.
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*/
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mutex_lock(&radio->lock);
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radio->status = STARTED;
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mutex_unlock(&radio->lock);
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}
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mutex_unlock(&radio->v4l2_lock);
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dev_info(&intf->dev, "going into suspend..\n");
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@ -581,11 +562,13 @@ static int usb_dsbr100_resume(struct usb_interface *intf)
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struct dsbr100_device *radio = usb_get_intfdata(intf);
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int retval;
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mutex_lock(&radio->v4l2_lock);
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if (radio->status == STARTED) {
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retval = dsbr100_start(radio);
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if (retval < 0)
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dev_warn(&intf->dev, "dsbr100_start failed\n");
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}
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mutex_unlock(&radio->v4l2_lock);
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dev_info(&intf->dev, "coming out of suspend..\n");
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@ -605,7 +588,7 @@ static void usb_dsbr100_video_device_release(struct video_device *videodev)
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/* File system interface */
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static const struct v4l2_file_operations usb_dsbr100_fops = {
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.owner = THIS_MODULE,
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.ioctl = video_ioctl2,
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.unlocked_ioctl = video_ioctl2,
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};
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static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = {
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@ -653,13 +636,13 @@ static int usb_dsbr100_probe(struct usb_interface *intf,
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return retval;
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}
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mutex_init(&radio->v4l2_lock);
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strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name));
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radio->videodev.v4l2_dev = v4l2_dev;
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radio->videodev.fops = &usb_dsbr100_fops;
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radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops;
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radio->videodev.release = usb_dsbr100_video_device_release;
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mutex_init(&radio->lock);
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radio->videodev.lock = &radio->v4l2_lock;
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radio->removed = 0;
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radio->usbdev = interface_to_usbdev(intf);
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