linux-kernel - Re: [PATCH] Fix hiddev's use of usb_find

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Date:	Tue, 14 Sep 2010 10:59:19 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Guillaume Chazarain <guichaz@...il.com>
Cc:	Arnd Bergmann <arnd@...db.de>, Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix hiddev's use of usb_find_interface

On Mon, 13 Sep 2010, Guillaume Chazarain wrote:

> > Yeah -- Guillaume, I think that you are actually seeing symptoms of
> > intfdata being bogus. Could you please try with any kernel with commit
> > 9c9e54a8df0be48 ("HID: hiddev: fix memory corruption due to invalid
> > intfdata") applied (which is the one Arnd is talking about) and report
> > back whether the problem is fixed by it?
> 
> I also saw the problem with 2.6.36-rc3. My problem is with
> usb_find_interface(&hiddev_driver) not finding anything and
> 9c9e54a8df0be48aa359744f412377cc55c3b7d2 did not change this line.
> 
> In its current state I don't understand how hiddev_open() can possibly
> work. I see people reporting suspend issues and stack traces in dmesg
> but nobody reporting the driver being non-functioning, which is what
> I'm doing here.

You are right. I have now applied your patch, thanks a lot for tracking it 
down.

-- 
Jiri Kosina
SUSE Labs, Novell Inc.
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