Re: [PATCH] usb: core: quirks: Skip device qualifier for BEITONG BTP-PG01A

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Mon, Oct 26, 2026 at 09:34:48PM +0800, ZeroNinEX wrote:
> The BEITONG BTP-PG01A wireless controller dongle initially enumerates as
> 4131:800c. Device qualifier requests fail with -EPIPE, followed by
> failures to read the configuration descriptor. After port recovery,
> the dongle can enumerate as 045e:028e with only two interfaces, leaving
> the vendor configuration software unusable in a Windows guest.
> 
> Add USB_QUIRK_DEVICE_QUALIFIER for 4131:800c to skip device qualifier
> requests. The dongle then enumerates as 20bc:5162 with five interfaces,
> including three HID interfaces, and the vendor software works through
> USB passthrough to a Windows VM.
> 
> Tested both usbcore.quirks=4131:800c:i and the built-in entry on an xHCI
> host. The patched kernel was tested without a dynamic usbcore.quirks
> entry. The configuration-request size quirk alone did not resolve the
> enumeration failure.
> 
> Signed-off-by: ZeroNinEX <zwq939681378@gmail.com>


Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
a patch that has triggered this response.  He used to manually respond
to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created.  Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
kernel tree.

You are receiving this message because of the following common error(s)
as indicated below:

- It looks like you did not use your "real" name for the patch on either
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  match).  Please read the kernel file,
  Documentation/process/submitting-patches.rst for how to do this
  correctly.

If you wish to discuss this problem further, or you have questions about
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thanks,

greg k-h's patch email bot