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Date: Fri, 10 May 2013 13:49:33 +0200 (CEST)
From: Jiri Kosina <jkosina@suse.cz>
To: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        linux-kernel@vger.kernel.org
Subject: Re: [GIT] HID
In-Reply-To: <20130510114759.GA19857@gmail.com>
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On Fri, 10 May 2013, Ingo Molnar wrote:

> hi Jiri,
> 
> * Jiri Kosina <jkosina@suse.cz> wrote:
> 
> > Linus,
> > 
> > please pull from
> > 
> >   git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid.git for-linus
> > 
> > to receive HID subsystem updates for 3.10. Highlights:
> > 
> > 
> > - hid driver transport cleanup, finalizing the long-desired decoupling of 
> >   core from transport layers, by Benjamin Tissoires and Henrik Rydberg
> > - support for hybrid finger/pen multitouch HID devices, by Benjamin 
> >   Tissoires
> > - fix for long-standing issue in Logitech unifying driver sometimes not
> >   inializing properly due to device specifics, by Andrew de los Reyes
> > - Wii remote driver updates to support 2nd generation of devices, by David 
> >   Herrmann
> > - support for Apple IR remote
> > - roccat driver now supports new devices (Roccat Kone Pure, IskuFX), by 
> >   Stefan Achatz
> > - debugfs locking fixes in hid debug interface, by Jiri Kosina
> 
> FYI, there's a new HID related lockdep and RCU splat upstream, probably 
> relatd to the debugfs locking fixes:
> 
> [   79.088631] ======================================================
> [   79.088631] [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
> [   79.088631] 3.9.0-13694-g7cf229a-dirty #224212 Tainted: G        W   
> [   79.088631] ------------------------------------------------------
> [   79.088631] swapper/0/1 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
> [   79.088631]  (&hdev->debug_list_lock){+.+...}, at: [<ffffffff82e510d9>] hid_debug_event+0x2e/0xd0
> [   79.088631] 
> 
> See the full bootlog below. It's from an allyesconfig x86-64 bootup log.

Hi Ingo,

thanks for the report. I have a fix for this in my tree already and am 
going to send pull request to Linus shortly.

Thanks,

-- 
Jiri Kosina
SUSE Labs