From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@bootlin.com (Maxime Ripard) Date: Mon, 8 Oct 2018 11:21:11 +0200 Subject: [PATCH v3 2/2] drm/sun4i: tcon: prevent tcon->panel dereference if NULL In-Reply-To: <20181005215951.99003-2-giulio.benetti@micronovasrl.com> References: <20181004195605.txvbkshvxklyzxyb@flea> <20181005215951.99003-1-giulio.benetti@micronovasrl.com> <20181005215951.99003-2-giulio.benetti@micronovasrl.com> Message-ID: <20181008092111.qcufr4o7cy3nnj4b@flea> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Oct 05, 2018 at 11:59:51PM +0200, Giulio Benetti wrote: > If tcon->panel pointer is NULL, trying to dereference from it > (i.e. tcon->panel->connector) will cause a null pointer dereference. > > Add tcon->panel null pointer check before calling > sun4i_tcon0_mode_set_dithering(). > > Signed-off-by: Giulio Benetti > Fixes: f11adcecbd5f ("drm/sun4i: tcon: Add dithering support for > RGB565/RGB666 LCD panels") > Reviewed-by: Chen-Yu Tsai Applied both, thanks! Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: