From 2aa689dd80575606a569951467eee6ac98710d33 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 9 Mar 2015 13:34:12 -0300 Subject: [media] usbvision: embed video_device 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/usbvision/usbvision-video.c | 70 ++++++++++----------------- 1 file changed, 26 insertions(+), 44 deletions(-) (limited to 'drivers/media/usb/usbvision/usbvision-video.c') diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c index cd2fbf11e3b4..2579c874b83b 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; -- cgit