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: <4C98C70B.3080407@turmel.org>
Date:	Tue, 21 Sep 2010 10:54:03 -0400
From:	Phil Turmel <philip@...mel.org>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Jiri Kosina <jkosina@...e.cz>, Mat <jackdachef@...il.com>,
	Guillaume Chazarain <guichaz@...il.com>,
	linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>,
	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 09/21/2010 10:30 AM, Alan Stern wrote:
> On Tue, 21 Sep 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'll look into that.
> 
> Apparently the problem is that intf->minors doesn't get initialized 
> properly.  This patch should fix it.  Everybody, please try it out.

Yes, this works for me.  (as did Jiri's version.)

Thank you both for the support.

Feel free to add my:

Tested-by: Philip J. Turmel <philip@...mel.org>
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