linux-kernel - Re: [PATCH] input: psmouse: fix input

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Message-ID: <20080116141353.ZZRA012@mailhub.coreip.homeip.net>
Date:	Wed, 16 Jan 2008 14:15:26 -0500
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Andres Salomon <dilinger@...ued.net>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: psmouse: fix input_dev leak in lifebook driver

On Wed, Jan 16, 2008 at 12:58:01PM -0500, Andres Salomon wrote:
> On Tue, 15 Jan 2008 17:04:01 -0500
> Dmitry Torokhov <dmitry.torokhov@...il.com> wrote:
> 
> > On Sat, Jan 12, 2008 at 03:12:52PM -0500, Andres Salomon wrote:
> > > 
> > > The lifebook driver may register a second input device, but it never
> > > unregisters it.  This fixes that.
> > > 
> > > Signed-off-by: Andres Salomon <dilinger@...ian.org>
> > 
> > Applied, thank you Andres.
> >
> 
> Hi Dmitry,
>  
> There's one additional patch, I don't know if you saw it; the subject
> was "check return value of input_register_device() in hil_ptr.c's init".
> 

I have seen it but postponed for later. Right now I am trying to get though
2.6.24 material.

> 
> Also, I've found myself needing to provide my own device_attribute for
> the OLPC psmouse driver; I couldn't use PSMOUSE_DEFINE_ATTR(), as its
> set_helper callback calls psmouse_disable.
> 
> static DEVICE_ATTR(powered, S_IWUSR | S_IRUGO, hgpk_show_powered,
>                 hgpk_set_powered);
> 
> Unfortunately, in order to not be racy, hgpk_set_powered needs to
> deal with psmouse_mutex.  Which method of dealing with this would
> you prefer?  I could either make psmouse_mutex no longer static,
> provide psmouse_mutex locking functions (declared in psmouse.h), or
> put psmouse_mutex into 'struct psmouse'.  Or, if you have any other
> ideas..

Could you just send me the code? I tend to think better when I see it...

Thanks!

-- 
Dmitry
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