Re: ezcap401 needs USB_QUIRK_NO_BOS to function on 10gbs usb speed

[Greg KH <gregkh@linuxfoundation.org>]

On Fri, Mar 13, 2026 at 12:54:35PM +0300, CaTaTo wrote:
> Sorry again, last message went probably to Greg's address rather than this
> topic. I managed to make a patch, hopefully I didn't miss anything critical.

No need to attach it, just use 'git send-email' to send it directly.

Also, some comments on the patch:

> From 1ad243ebd0211a591665383d1382615bb9e3dc3a Mon Sep 17 00:00:00 2001
> From: Vyacheslav Vahnenko <vahnenko2003@gmail.com>
> Date: Fri, 13 Mar 2026 12:12:26 +0300
> Subject: [PATCH] Add USB_QUIRK_NO_BOS for ezcap401 usb capture card
> 
> Signed-off-by: Vyacheslav Vahnenko <vahnenko2003@gmail.com>

You need to have some changelog text, we can't take it without any
wording.

> ---
>  drivers/usb/core/quirks.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
> index 9e7e49712..8ef876315 100644
> --- a/drivers/usb/core/quirks.c
> +++ b/drivers/usb/core/quirks.c
> @@ -583,6 +583,9 @@ static const struct usb_device_id usb_quirk_list[] = {
>  	/* INTEL VALUE SSD */
>  	{ USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
>  
> +	/* ezcap401 - BOS descriptor fetch hangs at SuperSpeed Plus */
> +	{ USB_DEVICE(0x32ed, 0x0401), .driver_info = USB_QUIRK_NO_BOS },

The list should be sorted by id.  Please put this in the proper place in
the list.

thanks,

greg k-h