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Date:      Thu, 04 Feb 2021 16:48:33 +0000
From:      bugzilla-noreply@freebsd.org
To:        usb@FreeBSD.org
Subject:   [Bug 253232] ulpt possible regression in 12.2
Message-ID:  <bug-253232-19105-oEnjORqepx@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-253232-19105@https.bugs.freebsd.org/bugzilla/>
References:  <bug-253232-19105@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253232

--- Comment #3 from Hans Petter Selasky <hselasky@FreeBSD.org> ---
Hi,

It might be related to the use of USB clear endpoint stall, prior to
transmission.

You can comment that out in the ulpt driver in the kernel. Look for clear
stall.

If that happens to be the case, your USB device's firmware is not fully USB
class compliant ...

--HPS

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