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Date:      Sat, 19 Sep 2020 08:07:51 +0000
From:      bugzilla-noreply@freebsd.org
To:        usb@FreeBSD.org
Subject:   [Bug 249384] Add support for Winbond CDC device in Tenma power supply
Message-ID:  <bug-249384-19105-iZgexyu7ng@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-249384-19105@https.bugs.freebsd.org/bugzilla/>
References:  <bug-249384-19105@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D249384

--- Comment #9 from Hans Petter Selasky <hselasky@FreeBSD.org> ---
> ie I guess my patch is not needed but it indicates a regression in the US=
B stack from 12 to 13.

There are similar devices which need a small delay before the configuration
index can be selected.

Can you try to patch sys/dev/usb/ 's=20

usb_error_t
usbd_set_config_index(struct usb_device *udev, uint8_t index)

and just add:

pause("W", hz);

in the beginning?

--HPS

--=20
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