Re: [PATCH RESEND v2] i2c: i2c-mt65xx: fix NULL ptr dereference

From: Wolfram Sang
Date: Mon Oct 21 2019 - 08:12:42 EST


On Fri, Oct 18, 2019 at 07:32:13PM +0200, Fabien Parent wrote:
> Since commit abf4923e97c3 ("i2c: mediatek: disable zero-length transfers
> for mt8183"), there is a NULL pointer dereference for all the SoCs
> that don't have any quirk. mtk_i2c_functionality is not checking that
> the quirks pointer is not NULL before starting to use it.
>
> This commit add a call to i2c_check_quirks which will check whether
> the quirks pointer is set, and if so will check if the IP has the
> NO_ZERO_LEN quirk.
>
> Fixes: abf4923e97c3 ("i2c: mediatek: disable zero-length transfers for mt8183")
> Signed-off-by: Fabien Parent <fparent@xxxxxxxxxxxx>
> Reviewed-by: Cengiz Can <cengiz@xxxxxxxxxx>
> Reviewed-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
> Tested-by: Ulrich Hecht <uli@xxxxxxxx>
>

Applied to for-current, thanks!

Attachment: signature.asc
Description: PGP signature