linux-kernel - Re: cdc-acm driver hangs on poll() call

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Message-Id: <200904231511.54024.oliver@neukum.org>
Date:	Thu, 23 Apr 2009 15:11:53 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Maróy Ákos <akos@...oy.hu>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: cdc-acm driver hangs on poll() call - 2.6.27, works on 2.6.24

Am Mittwoch 22 April 2009 15:25:00 schrieb Maróy Ákos:
> Oliver,
>
> > That's odd. I can't tell from the log. Can you make a usbmon trace?
>
> sure:
>
> cat /sys/kernel/debug/usbmon/1u

Please try setting ACM_NW in cdc-acm.h to 1. If that does not help,
please provide an usbmon trace of that modified kernel and 2.6.24.

	Regards
		Oliver

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