Re: [PATCH 02/15] Input: synaptics-rmi4 - don't kfree devm_ alloced memory

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On Wed, Feb 05, 2014 at 12:08:19AM +0100, Christopher Heiny wrote:
> On 01/23/2014 04:00 PM, Courtney Cavin wrote:
> > Cc: Christopher Heiny <cheiny@xxxxxxxxxxxxx>
> > Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> > Signed-off-by: Courtney Cavin <courtney.cavin@xxxxxxxxxxxxxx>
> 
> This is redundant with patch code submitted 2013/01/22.  See here:
>      http://www.spinics.net/lists/linux-input/msg29280.html
> 
> and in any case, Dmitry has submitted a more thorough tidy up here:
>      http://www.spinics.net/lists/linux-input/msg29323.html
> 

Neither of these two patches resolve the issue here, which is that you
should not directly free the memory allocated by devm_kzalloc() in
rmi_f01_alloc_memory().

> > ---
> >   drivers/input/rmi4/rmi_f01.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
> > index cf1081f..98bc65a9 100644
> > --- a/drivers/input/rmi4/rmi_f01.c
> > +++ b/drivers/input/rmi4/rmi_f01.c
> > @@ -390,7 +390,7 @@ static int rmi_f01_initialize(struct rmi_function *fn)
> >   	return 0;
> >
> >    error_exit:
> > -	kfree(data);
> > +	devm_kfree(&fn->dev, data);
> >   	return error;
> >   }
> >
> >
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