Re: [PATCH] media: uvcvideo: Add UVC_QUIRK_CTL_MSG_DELAY_1M for HIK camera

[Laurent Pinchart]

On Thu, Oct 29, 2026 at 11:31:06AM +0800, Kuangyi Chiang wrote:
> UVC control requests issued when preparing a video stream sometimes
> time out on the HIK 1080P Camera (2bdf:0280):
> 
> [   48.363671] uvcvideo: Found UVC 1.00 device HIK 1080P Camera (2bdf:0280)
> [   53.465662] uvcvideo: Failed to set UVC probe control : -110 (exp. 26).
> [   58.585653] uvcvideo: Failed to query (129) UVC probe control : -110 (exp. 26).
> [   58.592967] uvcvideo: Failed to initialize the device (-5).
> 
> Adding a 1ms delay after each control message avoids the issue.
> 
> Introduce UVC_QUIRK_CTL_MSG_DELAY_1M for this device.

We don't add random delays. This needs a root cause analysis.

> Signed-off-by: Kuangyi Chiang <ki.chiang65@xxxxxxxxx>
> ---
>  drivers/media/usb/uvc/uvc_driver.c |  9 +++++++++
>  drivers/media/usb/uvc/uvc_video.c  | 10 ++++++++--
>  drivers/media/usb/uvc/uvcvideo.h   |  1 +
>  3 files changed, 18 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
> index e289cc7..c720d75 100644
> --- a/drivers/media/usb/uvc/uvc_driver.c
> +++ b/drivers/media/usb/uvc/uvc_driver.c
> @@ -3162,6 +3162,15 @@ static const struct usb_device_id uvc_ids[] = {
>  	  .bInterfaceSubClass	= 1,
>  	  .bInterfaceProtocol	= 0,
>  	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_FORCE_BPP) },
> +	/* HIK 1080P Camera */
> +	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
> +				| USB_DEVICE_ID_MATCH_INT_INFO,
> +	  .idVendor		= 0x2bdf,
> +	  .idProduct		= 0x0280,
> +	  .bInterfaceClass	= USB_CLASS_VIDEO,
> +	  .bInterfaceSubClass	= 1,
> +	  .bInterfaceProtocol	= 0,
> +	  .driver_info		= UVC_INFO_QUIRK(UVC_QUIRK_CTL_MSG_DELAY_1M) },
>  	/* Insta360 Link */
>  	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
>  				| USB_DEVICE_ID_MATCH_INT_INFO,
> diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
> index fc3536a..4667f86 100644
> --- a/drivers/media/usb/uvc/uvc_video.c
> +++ b/drivers/media/usb/uvc/uvc_video.c
> @@ -35,13 +35,19 @@ static int __uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
>  {
>  	u8 type = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
>  	unsigned int pipe;
> +	int ret;
>  
>  	pipe = (query & 0x80) ? usb_rcvctrlpipe(dev->udev, 0)
>  			      : usb_sndctrlpipe(dev->udev, 0);
>  	type |= (query & 0x80) ? USB_DIR_IN : USB_DIR_OUT;
>  
> -	return usb_control_msg(dev->udev, pipe, query, type, cs << 8,
> -			unit << 8 | intfnum, data, size, timeout);
> +	ret = usb_control_msg(dev->udev, pipe, query, type, cs << 8,
> +			      unit << 8 | intfnum, data, size, timeout);
> +
> +	if (dev->quirks & UVC_QUIRK_CTL_MSG_DELAY_1M)
> +		usleep_range(1000, 2000);
> +
> +	return ret;
>  }
>  
>  static const char *uvc_query_name(u8 query)
> diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
> index b6bcee4..1426d14 100644
> --- a/drivers/media/usb/uvc/uvcvideo.h
> +++ b/drivers/media/usb/uvc/uvcvideo.h
> @@ -81,6 +81,7 @@
>  #define UVC_QUIRK_INVALID_DEVICE_SOF	0x00010000
>  #define UVC_QUIRK_MJPEG_NO_EOF		0x00020000
>  #define UVC_QUIRK_MSXU_META		0x00040000
> +#define UVC_QUIRK_CTL_MSG_DELAY_1M	0x00080000
>  
>  /* Format flags */
>  #define UVC_FMT_FLAG_COMPRESSED		0x00000001

-- 
Regards,

Laurent Pinchart