linux-kernel - Re: lockdep warning in urb.c:363 usb_submit

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Message-ID: <1585056047.7151.21.camel@suse.de>
Date:   Tue, 24 Mar 2020 14:20:47 +0100
From:   Oliver Neukum <oneukum@...e.de>
To:     Qais Yousef <qais.yousef@....com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: lockdep warning in urb.c:363 usb_submit_urb

Am Dienstag, den 24.03.2020, 10:46 +0000 schrieb Qais Yousef:
> 
> I should have stuck to what I know then. I misread the documentation. Hopefully
> the attached looks better. I don't see the new debug you added emitted.

That is odd. Please try

echo "module usbcore +mfp" > /sys/kernel/debug/dynamic_debug/control

with the attached improved patch.

	Regards
		Oliver

View attachment "0001-usb-hub-additional-debugging.patch" of type "text/x-patch" (697 bytes)