From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/usb/em28xx/em28xx-video.c | 119 ++++++++++++++------------------
drivers/media/usb/em28xx/em28xx.h | 6 +-
2 files changed, 54 insertions(+), 71 deletions(-)
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index 9ecf656..14eba9c 100644
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -1472,7 +1472,7 @@ static int vidioc_enum_input(struct file *file, void *priv,
(EM28XX_VMUX_CABLE == INPUT(n)->type))
i->type = V4L2_INPUT_TYPE_TUNER;
- i->std = dev->v4l2->vdev->tvnorms;
+ i->std = dev->v4l2->vdev.tvnorms;
/* webcams do not have the STD API */
if (dev->board.is_webcam)
i->capabilities = 0;
@@ -1730,9 +1730,9 @@ static int vidioc_querycap(struct file *file, void *priv,
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
- if (v4l2->vbi_dev)
+ if (video_is_registered(&v4l2->vbi_dev))
cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
- if (v4l2->radio_dev)
+ if (video_is_registered(&v4l2->radio_dev))
cap->capabilities |= V4L2_CAP_RADIO;
return 0;
}
@@ -1966,20 +1966,20 @@ static int em28xx_v4l2_fini(struct em28xx *dev)
em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
- if (v4l2->radio_dev) {
+ if (video_is_registered(&v4l2->radio_dev)) {
em28xx_info("V4L2 device %s deregistered\n",
- video_device_node_name(v4l2->radio_dev));
- video_unregister_device(v4l2->radio_dev);
+ video_device_node_name(&v4l2->radio_dev));
+ video_unregister_device(&v4l2->radio_dev);
}
- if (v4l2->vbi_dev) {
+ if (video_is_registered(&v4l2->vbi_dev)) {
em28xx_info("V4L2 device %s deregistered\n",
- video_device_node_name(v4l2->vbi_dev));
- video_unregister_device(v4l2->vbi_dev);
+ video_device_node_name(&v4l2->vbi_dev));
+ video_unregister_device(&v4l2->vbi_dev);
}
- if (v4l2->vdev) {
+ if (video_is_registered(&v4l2->vdev)) {
em28xx_info("V4L2 device %s deregistered\n",
- video_device_node_name(v4l2->vdev));
- video_unregister_device(v4l2->vdev);
+ video_device_node_name(&v4l2->vdev));
+ video_unregister_device(&v4l2->vdev);
}
v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
@@ -2127,7 +2127,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
static const struct video_device em28xx_video_template = {
.fops = &em28xx_v4l_fops,
.ioctl_ops = &video_ioctl_ops,
- .release = video_device_release,
+ .release = video_device_release_empty,
.tvnorms = V4L2_STD_ALL,
};
@@ -2156,7 +2156,7 @@ static const struct v4l2_ioctl_ops radio_ioctl_ops = {
static struct video_device em28xx_radio_template = {
.fops = &radio_fops,
.ioctl_ops = &radio_ioctl_ops,
- .release = video_device_release,
+ .release = video_device_release_empty,
};
/* I2C possible address to saa7115, tvp5150, msp3400, tvaudio */
@@ -2179,17 +2179,11 @@ static unsigned short msp3400_addrs[] = {
/******************************** usb interface ******************************/
-static struct video_device
-*em28xx_vdev_init(struct em28xx *dev,
- const struct video_device *template,
- const char *type_name)
+static void em28xx_vdev_init(struct em28xx *dev,
+ struct video_device *vfd,
+ const struct video_device *template,
+ const char *type_name)
{
- struct video_device *vfd;
-
- vfd = video_device_alloc();
- if (NULL == vfd)
- return NULL;
-
*vfd = *template;
vfd->v4l2_dev = &dev->v4l2->v4l2_dev;
vfd->lock = &dev->lock;
@@ -2200,7 +2194,6 @@ static struct video_device
dev->name, type_name);
video_set_drvdata(vfd, dev);
- return vfd;
}
static void em28xx_tuner_setup(struct em28xx *dev, unsigned short tuner_addr)
@@ -2491,38 +2484,33 @@ static int em28xx_v4l2_init(struct em28xx *dev)
goto unregister_dev;
/* allocate and fill video video_device struct */
- v4l2->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video");
- if (!v4l2->vdev) {
- em28xx_errdev("cannot allocate video_device.\n");
- ret = -ENODEV;
- goto unregister_dev;
- }
+ em28xx_vdev_init(dev, &v4l2->vdev, &em28xx_video_template, "video");
mutex_init(&v4l2->vb_queue_lock);
mutex_init(&v4l2->vb_vbi_queue_lock);
- v4l2->vdev->queue = &v4l2->vb_vidq;
- v4l2->vdev->queue->lock = &v4l2->vb_queue_lock;
+ v4l2->vdev.queue = &v4l2->vb_vidq;
+ v4l2->vdev.queue->lock = &v4l2->vb_queue_lock;
/* disable inapplicable ioctls */
if (dev->board.is_webcam) {
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_QUERYSTD);
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_G_STD);
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_S_STD);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_QUERYSTD);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_STD);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_STD);
} else {
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_S_PARM);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_PARM);
}
if (dev->tuner_type == TUNER_ABSENT) {
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_G_TUNER);
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_S_TUNER);
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_G_FREQUENCY);
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_S_FREQUENCY);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_TUNER);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_TUNER);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_FREQUENCY);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_FREQUENCY);
}
if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) {
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_G_AUDIO);
- v4l2_disable_ioctl(v4l2->vdev, VIDIOC_S_AUDIO);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_AUDIO);
+ v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_AUDIO);
}
/* register v4l2 video video_device */
- ret = video_register_device(v4l2->vdev, VFL_TYPE_GRABBER,
+ ret = video_register_device(&v4l2->vdev, VFL_TYPE_GRABBER,
video_nr[dev->devno]);
if (ret) {
em28xx_errdev("unable to register video device (error=%i).\n",
@@ -2532,27 +2520,27 @@ static int em28xx_v4l2_init(struct em28xx *dev)
/* Allocate and fill vbi video_device struct */
if (em28xx_vbi_supported(dev) == 1) {
- v4l2->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
- "vbi");
+ em28xx_vdev_init(dev, &v4l2->vbi_dev, &em28xx_video_template,
+ "vbi");
- v4l2->vbi_dev->queue = &v4l2->vb_vbiq;
- v4l2->vbi_dev->queue->lock = &v4l2->vb_vbi_queue_lock;
+ v4l2->vbi_dev.queue = &v4l2->vb_vbiq;
+ v4l2->vbi_dev.queue->lock = &v4l2->vb_vbi_queue_lock;
/* disable inapplicable ioctls */
- v4l2_disable_ioctl(v4l2->vbi_dev, VIDIOC_S_PARM);
+ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_PARM);
if (dev->tuner_type == TUNER_ABSENT) {
- v4l2_disable_ioctl(v4l2->vbi_dev, VIDIOC_G_TUNER);
- v4l2_disable_ioctl(v4l2->vbi_dev, VIDIOC_S_TUNER);
- v4l2_disable_ioctl(v4l2->vbi_dev, VIDIOC_G_FREQUENCY);
- v4l2_disable_ioctl(v4l2->vbi_dev, VIDIOC_S_FREQUENCY);
+ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_TUNER);
+ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_TUNER);
+ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_FREQUENCY);
+ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_FREQUENCY);
}
if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) {
- v4l2_disable_ioctl(v4l2->vbi_dev, VIDIOC_G_AUDIO);
- v4l2_disable_ioctl(v4l2->vbi_dev, VIDIOC_S_AUDIO);
+ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_AUDIO);
+ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_AUDIO);
}
/* register v4l2 vbi video_device */
- ret = video_register_device(v4l2->vbi_dev, VFL_TYPE_VBI,
+ ret = video_register_device(&v4l2->vbi_dev, VFL_TYPE_VBI,
vbi_nr[dev->devno]);
if (ret < 0) {
em28xx_errdev("unable to register vbi device\n");
@@ -2561,29 +2549,24 @@ static int em28xx_v4l2_init(struct em28xx *dev)
}
if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) {
- v4l2->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template,
- "radio");
- if (!v4l2->radio_dev) {
- em28xx_errdev("cannot allocate video_device.\n");
- ret = -ENODEV;
- goto unregister_dev;
- }
- ret = video_register_device(v4l2->radio_dev, VFL_TYPE_RADIO,
+ em28xx_vdev_init(dev, &v4l2->radio_dev, &em28xx_radio_template,
+ "radio");
+ ret = video_register_device(&v4l2->radio_dev, VFL_TYPE_RADIO,
radio_nr[dev->devno]);
if (ret < 0) {
em28xx_errdev("can't register radio device\n");
goto unregister_dev;
}
em28xx_info("Registered radio device as %s\n",
- video_device_node_name(v4l2->radio_dev));
+ video_device_node_name(&v4l2->radio_dev));
}
em28xx_info("V4L2 video device registered as %s\n",
- video_device_node_name(v4l2->vdev));
+ video_device_node_name(&v4l2->vdev));
- if (v4l2->vbi_dev)
+ if (video_is_registered(&v4l2->vbi_dev))
em28xx_info("V4L2 VBI device registered as %s\n",
- video_device_node_name(v4l2->vbi_dev));
+ video_device_node_name(&v4l2->vbi_dev));
/* Save some power by putting tuner to sleep */
v4l2_device_call_all(&v4l2->v4l2_dev, 0, core, s_power, 0);
diff --git a/drivers/media/usb/em28xx/em28xx.h b/drivers/media/usb/em28xx/em28xx.h
index 637c959..e6559c6 100644
--- a/drivers/media/usb/em28xx/em28xx.h
+++ b/drivers/media/usb/em28xx/em28xx.h
@@ -513,9 +513,9 @@ struct em28xx_v4l2 {
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_clk *clk;
- struct video_device *vdev;
- struct video_device *vbi_dev;
- struct video_device *radio_dev;
+ struct video_device vdev;
+ struct video_device vbi_dev;
+ struct video_device radio_dev;
/* Videobuf2 */
struct vb2_queue vb_vidq;
--
2.1.4
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