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/usbvision/usbvision-video.c | 70 ++++++++++-----------------
drivers/media/usb/usbvision/usbvision.h | 4 +-
2 files changed, 28 insertions(+), 46 deletions(-)
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
index cd2fbf1..2579c87 100644
--- a/drivers/media/usb/usbvision/usbvision-video.c
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -471,7 +471,7 @@ static int vidioc_g_register(struct file *file, void *priv,
/* NT100x has a 8-bit register space */
err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
if (err_code < 0) {
- dev_err(&usbvision->vdev->dev,
+ dev_err(&usbvision->vdev.dev,
"%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
__func__, err_code);
return err_code;
@@ -490,7 +490,7 @@ static int vidioc_s_register(struct file *file, void *priv,
/* NT100x has a 8-bit register space */
err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
if (err_code < 0) {
- dev_err(&usbvision->vdev->dev,
+ dev_err(&usbvision->vdev.dev,
"%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
__func__, err_code);
return err_code;
@@ -1157,7 +1157,7 @@ static int usbvision_radio_open(struct file *file)
if (mutex_lock_interruptible(&usbvision->v4l2_lock))
return -ERESTARTSYS;
if (usbvision->user) {
- dev_err(&usbvision->rdev->dev,
+ dev_err(&usbvision->rdev.dev,
"%s: Someone tried to open an already opened USBVision Radio!\n",
__func__);
err_code = -EBUSY;
@@ -1280,7 +1280,7 @@ static struct video_device usbvision_video_template = {
.fops = &usbvision_fops,
.ioctl_ops = &usbvision_ioctl_ops,
.name = "usbvision-video",
- .release = video_device_release,
+ .release = video_device_release_empty,
.tvnorms = USBVISION_NORMS,
};
@@ -1312,58 +1312,46 @@ static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
static struct video_device usbvision_radio_template = {
.fops = &usbvision_radio_fops,
.name = "usbvision-radio",
- .release = video_device_release,
+ .release = video_device_release_empty,
.ioctl_ops = &usbvision_radio_ioctl_ops,
};
-static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
- struct video_device *vdev_template,
- char *name)
+static void usbvision_vdev_init(struct usb_usbvision *usbvision,
+ struct video_device *vdev,
+ const struct video_device *vdev_template,
+ const char *name)
{
struct usb_device *usb_dev = usbvision->dev;
- struct video_device *vdev;
if (usb_dev == NULL) {
dev_err(&usbvision->dev->dev,
"%s: usbvision->dev is not set\n", __func__);
- return NULL;
+ return;
}
- vdev = video_device_alloc();
- if (NULL == vdev)
- return NULL;
*vdev = *vdev_template;
vdev->lock = &usbvision->v4l2_lock;
vdev->v4l2_dev = &usbvision->v4l2_dev;
snprintf(vdev->name, sizeof(vdev->name), "%s", name);
video_set_drvdata(vdev, usbvision);
- return vdev;
}
/* unregister video4linux devices */
static void usbvision_unregister_video(struct usb_usbvision *usbvision)
{
/* Radio Device: */
- if (usbvision->rdev) {
+ if (video_is_registered(&usbvision->rdev)) {
PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
- video_device_node_name(usbvision->rdev));
- if (video_is_registered(usbvision->rdev))
- video_unregister_device(usbvision->rdev);
- else
- video_device_release(usbvision->rdev);
- usbvision->rdev = NULL;
+ video_device_node_name(&usbvision->rdev));
+ video_unregister_device(&usbvision->rdev);
}
/* Video Device: */
- if (usbvision->vdev) {
+ if (video_is_registered(&usbvision->vdev)) {
PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
- video_device_node_name(usbvision->vdev));
- if (video_is_registered(usbvision->vdev))
- video_unregister_device(usbvision->vdev);
- else
- video_device_release(usbvision->vdev);
- usbvision->vdev = NULL;
+ video_device_node_name(&usbvision->vdev));
+ video_unregister_device(&usbvision->vdev);
}
}
@@ -1371,28 +1359,22 @@ static void usbvision_unregister_video(struct usb_usbvision *usbvision)
static int usbvision_register_video(struct usb_usbvision *usbvision)
{
/* Video Device: */
- usbvision->vdev = usbvision_vdev_init(usbvision,
- &usbvision_video_template,
- "USBVision Video");
- if (usbvision->vdev == NULL)
- goto err_exit;
- if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
+ usbvision_vdev_init(usbvision, &usbvision->vdev,
+ &usbvision_video_template, "USBVision Video");
+ if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
goto err_exit;
printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
- usbvision->nr, video_device_node_name(usbvision->vdev));
+ usbvision->nr, video_device_node_name(&usbvision->vdev));
/* Radio Device: */
if (usbvision_device_data[usbvision->dev_model].radio) {
/* usbvision has radio */
- usbvision->rdev = usbvision_vdev_init(usbvision,
- &usbvision_radio_template,
- "USBVision Radio");
- if (usbvision->rdev == NULL)
- goto err_exit;
- if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
+ usbvision_vdev_init(usbvision, &usbvision->rdev,
+ &usbvision_radio_template, "USBVision Radio");
+ if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
goto err_exit;
printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
- usbvision->nr, video_device_node_name(usbvision->rdev));
+ usbvision->nr, video_device_node_name(&usbvision->rdev));
}
/* all done */
return 0;
@@ -1461,7 +1443,7 @@ static void usbvision_release(struct usb_usbvision *usbvision)
usbvision->initialized = 0;
- usbvision_remove_sysfs(usbvision->vdev);
+ usbvision_remove_sysfs(&usbvision->vdev);
usbvision_unregister_video(usbvision);
kfree(usbvision->alt_max_pkt_size);
@@ -1611,7 +1593,7 @@ static int usbvision_probe(struct usb_interface *intf,
usbvision_configure_video(usbvision);
usbvision_register_video(usbvision);
- usbvision_create_sysfs(usbvision->vdev);
+ usbvision_create_sysfs(&usbvision->vdev);
PDEBUG(DBG_PROBE, "success");
return 0;
diff --git a/drivers/media/usb/usbvision/usbvision.h b/drivers/media/usb/usbvision/usbvision.h
index 77aeb1e..140a1f6 100644
--- a/drivers/media/usb/usbvision/usbvision.h
+++ b/drivers/media/usb/usbvision/usbvision.h
@@ -357,8 +357,8 @@ extern struct usb_device_id usbvision_table[];
struct usb_usbvision {
struct v4l2_device v4l2_dev;
- struct video_device *vdev; /* Video Device */
- struct video_device *rdev; /* Radio Device */
+ struct video_device vdev; /* Video Device */
+ struct video_device rdev; /* Radio Device */
/* i2c Declaration Section*/
struct i2c_adapter i2c_adap;
--
2.1.4
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
