From patchwork Mon Mar 1 16:06:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 389794 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31051C4332D for ; Mon, 1 Mar 2021 18:07:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0770165424 for ; Mon, 1 Mar 2021 18:07:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238199AbhCASHF (ORCPT ); Mon, 1 Mar 2021 13:07:05 -0500 Received: from mail.kernel.org ([198.145.29.99]:54158 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238446AbhCASBi (ORCPT ); Mon, 1 Mar 2021 13:01:38 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 795A965319; Mon, 1 Mar 2021 17:43:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614620600; bh=aCzIOW8nxMmO1Kpwz8TKbV75oBREFmR3a8tv0qBT4qQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zmeIUwJyBWkgTvOgl0MlGFjQcEllfm7443XW+PnK26uIJvOktSsoKzF6AuzU/uan4 JZtx8rnkOq171iEe19Xj+O6ejvNity68NCZG/sBJyJbK9DlaZnqMkTny0E0HFBDnZN APgLrAyHx18COOXAEU55s69Kx7M4YkJEfoLqu2oE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Fabio Estevam , Rui Miguel Silva , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.11 212/775] media: imx7: csi: Fix regression for parallel cameras on i.MX6UL Date: Mon, 1 Mar 2021 17:06:20 +0100 Message-Id: <20210301161212.111978371@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161201.679371205@linuxfoundation.org> References: <20210301161201.679371205@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Fabio Estevam [ Upstream commit 9bac67214fbf4b5f23463f7742ccf69bfe684cbd ] Commit 86e02d07871c ("media: imx5/6/7: csi: Mark a bound video mux as a CSI mux") made an incorrect assumption that for imx7-media-csi, the bound subdev must always be a CSI mux. On i.MX6UL/i.MX6ULL there is no CSI mux at all, so do not return an error when the entity is not a video mux and assign the IMX_MEDIA_GRP_ID_CSI_MUX group id only when appropriate. This is the same approach as done in imx-media-csi.c and it fixes the csi probe regression on i.MX6UL. Tested on a imx6ull-evk board. Fixes: 86e02d07871c ("media: imx5/6/7: csi: Mark a bound video mux as a CSI mux") Signed-off-by: Fabio Estevam Signed-off-by: Rui Miguel Silva Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/staging/media/imx/imx7-media-csi.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c index a3f3df9017046..31e36168f9d0f 100644 --- a/drivers/staging/media/imx/imx7-media-csi.c +++ b/drivers/staging/media/imx/imx7-media-csi.c @@ -1164,12 +1164,12 @@ static int imx7_csi_notify_bound(struct v4l2_async_notifier *notifier, struct imx7_csi *csi = imx7_csi_notifier_to_dev(notifier); struct media_pad *sink = &csi->sd.entity.pads[IMX7_CSI_PAD_SINK]; - /* The bound subdev must always be the CSI mux */ - if (WARN_ON(sd->entity.function != MEDIA_ENT_F_VID_MUX)) - return -ENXIO; - - /* Mark it as such via its group id */ - sd->grp_id = IMX_MEDIA_GRP_ID_CSI_MUX; + /* + * If the subdev is a video mux, it must be one of the CSI + * muxes. Mark it as such via its group id. + */ + if (sd->entity.function == MEDIA_ENT_F_VID_MUX) + sd->grp_id = IMX_MEDIA_GRP_ID_CSI_MUX; return v4l2_create_fwnode_links_to_pad(sd, sink); }