2021-03-17 16:46:54

by Ricardo Ribalda

Subject: [PATCH v6 11/17] media: uvcvideo: Use dev->name for querycap()

Use the device name for the card name instead of vdev->name.

Suggested-by: Laurent Pinchart <[email protected]>
Signed-off-by: Ricardo Ribalda <[email protected]>
---
drivers/media/usb/uvc/uvc_v4l2.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 397217171bbb..dd10cb9361fa 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -617,13 +617,12 @@ static int uvc_v4l2_release(struct file *file)
static int uvc_ioctl_querycap(struct file *file, void *fh,
struct v4l2_capability *cap)
{
- struct video_device *vdev = video_devdata(file);
struct uvc_fh *handle = file->private_data;
struct uvc_video_chain *chain = handle->chain;
struct uvc_streaming *stream = handle->stream;

strscpy(cap->driver, "uvcvideo", sizeof(cap->driver));
- strscpy(cap->card, vdev->name, sizeof(cap->card));
+ strscpy(cap->card, handle->stream->dev->name, sizeof(cap->card));
usb_make_path(stream->dev->udev, cap->bus_info, sizeof(cap->bus_info));
cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
| chain->caps;
--
2.31.0.rc2.261.g7f71774620-goog

2021-03-18 08:09:38

by Hans Verkuil

Subject: Re: [PATCH v6 11/17] media: uvcvideo: Use dev->name for querycap()

On 17/03/2021 17:45, Ricardo Ribalda wrote:
> Use the device name for the card name instead of vdev->name.
>
> Suggested-by: Laurent Pinchart <[email protected]>
> Signed-off-by: Ricardo Ribalda <[email protected]>
> ---
> drivers/media/usb/uvc/uvc_v4l2.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
> index 397217171bbb..dd10cb9361fa 100644
> --- a/drivers/media/usb/uvc/uvc_v4l2.c
> +++ b/drivers/media/usb/uvc/uvc_v4l2.c
> @@ -617,13 +617,12 @@ static int uvc_v4l2_release(struct file *file)
> static int uvc_ioctl_querycap(struct file *file, void *fh,
> struct v4l2_capability *cap)
> {
> - struct video_device *vdev = video_devdata(file);
> struct uvc_fh *handle = file->private_data;
> struct uvc_video_chain *chain = handle->chain;
> struct uvc_streaming *stream = handle->stream;
>
> strscpy(cap->driver, "uvcvideo", sizeof(cap->driver));
> - strscpy(cap->card, vdev->name, sizeof(cap->card));
> + strscpy(cap->card, handle->stream->dev->name, sizeof(cap->card));
> usb_make_path(stream->dev->udev, cap->bus_info, sizeof(cap->bus_info));
> cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
> | chain->caps;
>

You forgot to update querycap in uvc_metadata.c as well:

Signed-off-by: Hans Verkuil <[email protected]>
---
diff --git a/drivers/media/usb/uvc/uvc_metadata.c b/drivers/media/usb/uvc/uvc_metadata.c
index 849d8e5ab75d..d3aab22f91ce 100644
--- a/drivers/media/usb/uvc/uvc_metadata.c
+++ b/drivers/media/usb/uvc/uvc_metadata.c
@@ -30,7 +30,7 @@ static int uvc_meta_v4l2_querycap(struct file *file, void *fh,
struct uvc_video_chain *chain = stream->chain;

strscpy(cap->driver, "uvcvideo", sizeof(cap->driver));
- strscpy(cap->card, vfh->vdev->name, sizeof(cap->card));
+ strscpy(cap->card, stream->dev->name, sizeof(cap->card));
usb_make_path(stream->dev->udev, cap->bus_info, sizeof(cap->bus_info));
cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
| chain->caps;

With this change both video and metadata card names are the same, as you would
expect.

Regards,

Hans