linux-kernel - Re: [BUG, Regression, bisected] USB mouse causes bug on 1st insert, ignored on 2nd insert, lsusb stuck at usbdev

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Message-ID: <20100921144814.GA6484@fritha.org>
Date:	Tue, 21 Sep 2010 16:48:14 +0200
From:	Heinz Diehl <htd@...tha.org>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	Phil Turmel <philip@...mel.org>, Mat <jackdachef@...il.com>,
	Guillaume Chazarain <guichaz@...il.com>,
	linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>,
	Alan Stern <stern@...land.harvard.edu>,
	Oliver Neukum <oliver@...kum.org>, Alan Ott <alan@...nal11.us>,
	linux-usb@...r.kernel.org, linux-input@...r.kernel.org,
	Andreas Bombe <aeb@...ian.org>,
	Alex Riesen <raa.lkml@...il.com>,
	Gabriel C <nix.or.die@...glemail.com>
Subject: Re: [BUG, Regression, bisected] USB mouse causes bug on 1st insert,
 ignored on 2nd insert, lsusb stuck at usbdev_open

On 21.09.2010, Jiri Kosina wrote: 

> > I have just found out that it's actually CONFIG_USB_DYNAMIC_MINORS which 
> > makes the difference. When unset, the problem doesn't trigger, and 
> > usb_find_interface() always returns the proper interface. When 
> > CONFIG_USB_DYNAMIC_MINORS is being used, the oops happen.

I don't have it set in my .config:

liesel:/usr/src/linux-2.6.36-rc4-git5 # cat .config | grep DYNAMIC_MINORS
CONFIG_SND_DYNAMIC_MINORS=y
# CONFIG_USB_DYNAMIC_MINORS is not set

> Could you guys please verify whether the patch below fixes the issues you 
> were seeing and puts everything back into shape again? Thanks.

Your patch applies cleanly to 2.6.36-rc4-git5, however, it doesn't fix the
problem for me. 

My .config is attached.

Thanks,
Heinz.

Download attachment "config.bz2" of type "application/octet-stream" (19191 bytes)