From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CA3E6CA0ECB for ; Mon, 11 Sep 2023 21:59:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237673AbjIKV4m (ORCPT ); Mon, 11 Sep 2023 17:56:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236177AbjIKJxt (ORCPT ); Mon, 11 Sep 2023 05:53:49 -0400 Received: from jabberwock.ucw.cz (jabberwock.ucw.cz [46.255.230.98]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8F86CE6; Mon, 11 Sep 2023 02:53:44 -0700 (PDT) Received: by jabberwock.ucw.cz (Postfix, from userid 1017) id A24FA1C0006; Mon, 11 Sep 2023 11:53:43 +0200 (CEST) Date: Mon, 11 Sep 2023 11:53:43 +0200 From: Pavel Machek To: Sasha Levin Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, AngeloGioacchino Del Regno , Chen-Yu Tsai , CK Hu , Alexandre Mergnat , Chun-Kuang Hu , p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, matthias.bgg@gmail.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH AUTOSEL 6.1 18/22] drm/mediatek: dp: Change logging to dev for mtk_dp_aux_transfer() Message-ID: References: <20230908193407.3463368-1-sashal@kernel.org> <20230908193407.3463368-18-sashal@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="4qeMU1aw+NQuf6wD" Content-Disposition: inline In-Reply-To: <20230908193407.3463368-18-sashal@kernel.org> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org --4qeMU1aw+NQuf6wD Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > From: AngeloGioacchino Del Regno >=20 > [ Upstream commit fd70e2019bfbcb0ed90c5e23839bf510ce6acf8f ] >=20 > Change logging from drm_{err,info}() to dev_{err,info}() in functions > mtk_dp_aux_transfer() and mtk_dp_aux_do_transfer(): this will be > essential to avoid getting NULL pointer kernel panics if any kind > of error happens during AUX transfers happening before the bridge > is attached. >=20 > This may potentially start happening in a later commit implementing > aux-bus support, as AUX transfers will be triggered from the panel > driver (for EDID) before the mtk-dp bridge gets attached, and it's > done in preparation for the same. This is preparation for patches we are not going to apply to stable. Please drop. BR, Pavel --=20 DENX Software Engineering GmbH, Managing Director: Erika Unter HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany --4qeMU1aw+NQuf6wD Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRPfPO7r0eAhk010v0w5/Bqldv68gUCZP7jpwAKCRAw5/Bqldv6 8vYyAJ9Nk540JZqEdAv0hwqmNlfia7uUQgCggql3UPEMcq+KKIag1e2oo6SCcaU= =O3KV -----END PGP SIGNATURE----- --4qeMU1aw+NQuf6wD--