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

From: Wolfram Sang <[email-masked]>
Date: Mon, 21 Oct 2019 14:12:38 +0200

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 <[email-masked]>
> Reviewed-by: Cengiz Can <[email-masked]>
> Reviewed-by: Hsin-Yi Wang <[email-masked]>
> Tested-by: Ulrich Hecht <[email-masked]>
> 

Applied to for-current, thanks!

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