Re: [PATCH] Input: elants_i2c - Fix NULL dereference at probing

From: Takashi Iwai
Date: Thu May 27 2021 - 02:20:37 EST


On Wed, 26 May 2021 22:19:51 +0200,
Dmitry Torokhov wrote:
>
> Hi Takashi,
>
> On Wed, May 26, 2021 at 09:43:01PM +0200, Takashi Iwai wrote:
> > The recent change in elants_i2c driver to support more chips
> > introduced a regression leading to Oops at probing. The driver reads
> > id->driver_data, but the id may be NULL depending on the device type
> > the driver gets bound.
> >
> > Add a NULL check and falls back to the default EKTH3500.
>
> Thank you for the patch. I think my preference would be to switch to
> device_get_match_data() and annotate the rest of the match tables with
> proper controller types.

OK, that sounds feasible. Shall I submit a revised patch?


Takashi