linux-kernel - Re: [PATCH] media: uvcvideo: Force UVC version to 1.0a for 0408:4033

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Message-ID: <20240924134839.GC20255@pendragon.ideasonboard.com>
Date: Tue, 24 Sep 2024 16:48:39 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Ricardo Ribalda <ribalda@...omium.org>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Giuliano Lotta <giuliano.lotta@...il.com>
Subject: Re: [PATCH] media: uvcvideo: Force UVC version to 1.0a for 0408:4033

Hi Ricardo,

Thank you for the patch.

On Tue, Sep 24, 2024 at 01:33:29PM +0000, Ricardo Ribalda wrote:
> The Quanta ACER HD User Facing camera reports a UVC 1.50 version, but
> implements UVC 1.0a as shown by the UVC probe control being 26 bytes
> long. Force the UVC version for that device.
> 
> Reported-by: Giuliano Lotta <giuliano.lotta@...il.com>
> Closes: https://lore.kernel.org/linux-media/fce4f906-d69b-417d-9f13-bf69fe5c81e3@koyu.space/
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> ---
>  drivers/media/usb/uvc/uvc_driver.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
> index f0febdc08c2d..cc62bdf77c08 100644
> --- a/drivers/media/usb/uvc/uvc_driver.c
> +++ b/drivers/media/usb/uvc/uvc_driver.c
> @@ -2431,6 +2431,17 @@ static const struct uvc_device_info uvc_quirk_force_y8 = {
>   */
>  static const struct usb_device_id uvc_ids[] = {
>  	/* Quanta ACER HD User Facing */
> +	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
> +				| USB_DEVICE_ID_MATCH_INT_INFO,
> +	  .idVendor		= 0x0408,
> +	  .idProduct		= 0x4033,
> +	  .bInterfaceClass	= USB_CLASS_VIDEO,
> +	  .bInterfaceSubClass	= 1,
> +	  .bInterfaceProtocol	= UVC_PC_PROTOCOL_15,
> +	  .driver_info		= (kernel_ulong_t)&(const struct uvc_device_info){
> +		.uvc_version = 0x010a,
> +	  } },
> +	/* Quanta ACER HD User Facing */
>  	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
>  				| USB_DEVICE_ID_MATCH_INT_INFO,
>  	  .idVendor		= 0x0408,
> 
> ---
> base-commit: abf2050f51fdca0fd146388f83cddd95a57a008d
> change-id: 20240924-uvc-quanta-52a120a277fe

-- 
Regards,

Laurent Pinchart