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 X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,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 39A35C282DD for ; Thu, 23 May 2019 19:34:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1141120879 for ; Thu, 23 May 2019 19:34:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558640058; bh=qNYODgqWKhdbPsHa9pHqWA8Zqitjdz0r1FPR3mUqAr0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1n626fJjnfVL5KAYocomNd7X4TzwPSwHUXTGCHR+YZANspUXVPEYFCCuwcKV6bnFf 2Cmhb6Sa9LV2y7a+2hnA1uebGg50BUH4oRo6HrSjTfuwVUoR01av18g4IlG0ZkotaC tk3JCttCsCr0D2pcLSfMjpUNH9yggoSom1Jn/RSM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391724AbfEWTeR (ORCPT ); Thu, 23 May 2019 15:34:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:40398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388778AbfEWT17 (ORCPT ); Thu, 23 May 2019 15:27:59 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8F28320879; Thu, 23 May 2019 19:27:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558639678; bh=qNYODgqWKhdbPsHa9pHqWA8Zqitjdz0r1FPR3mUqAr0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Zt1WeJxzN876MzXm8Yhoojx45A1p+mnifg85RqMkxXJHGKDS4oIpuUxy+cWn/UEMG UGkQsx7IIs2wbfeFZ2zOqochNVBWoFDur0BihNeh2T8iJIrDX0rVRFteJ28ASfdpxY dECfnim4rQUOblBJ/Yi1NPWKKcgOXOQQPusb6hsM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Steve Longerbeam , Philipp Zabel , Hans Verkuil , Mauro Carvalho Chehab Subject: [PATCH 5.1 054/122] media: imx: Dont register IPU subdevs/links if CSI port missing Date: Thu, 23 May 2019 21:06:16 +0200 Message-Id: <20190523181711.867323134@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190523181705.091418060@linuxfoundation.org> References: <20190523181705.091418060@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Steve Longerbeam commit dee747f88167124884a918855c1f438e2f7f39e2 upstream. The second IPU internal sub-devices were being registered and links to them created even when the second IPU is not present. This is wrong for i.MX6 S/DL and i.MX53 which have only a single IPU. Fixes: e130291212df5 ("[media] media: Add i.MX media core driver") Signed-off-by: Steve Longerbeam Reviewed-by: Philipp Zabel Cc: stable@vger.kernel.org Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/staging/media/imx/imx-media-dev.c | 7 -- drivers/staging/media/imx/imx-media-internal-sd.c | 22 +------- drivers/staging/media/imx/imx-media-of.c | 58 ++++++++++++++-------- drivers/staging/media/imx/imx-media.h | 3 - drivers/staging/media/imx/imx7-media-csi.c | 2 5 files changed, 46 insertions(+), 46 deletions(-) --- a/drivers/staging/media/imx/imx-media-dev.c +++ b/drivers/staging/media/imx/imx-media-dev.c @@ -477,13 +477,6 @@ static int imx_media_probe(struct platfo goto cleanup; } - ret = imx_media_add_ipu_internal_subdevs(imxmd); - if (ret) { - v4l2_err(&imxmd->v4l2_dev, - "add_ipu_internal_subdevs failed with %d\n", ret); - goto cleanup; - } - ret = imx_media_dev_notifier_register(imxmd); if (ret) goto del_int; --- a/drivers/staging/media/imx/imx-media-internal-sd.c +++ b/drivers/staging/media/imx/imx-media-internal-sd.c @@ -298,13 +298,14 @@ static int add_internal_subdev(struct im } /* adds the internal subdevs in one ipu */ -static int add_ipu_internal_subdevs(struct imx_media_dev *imxmd, int ipu_id) +int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd, + int ipu_id) { enum isd_enum i; + int ret; for (i = 0; i < num_isd; i++) { const struct internal_subdev *isd = &int_subdev[i]; - int ret; /* * the CSIs are represented in the device-tree, so those @@ -322,25 +323,10 @@ static int add_ipu_internal_subdevs(stru } if (ret) - return ret; + goto remove; } return 0; -} - -int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd) -{ - int ret; - - ret = add_ipu_internal_subdevs(imxmd, 0); - if (ret) - goto remove; - - ret = add_ipu_internal_subdevs(imxmd, 1); - if (ret) - goto remove; - - return 0; remove: imx_media_remove_ipu_internal_subdevs(imxmd); --- a/drivers/staging/media/imx/imx-media-of.c +++ b/drivers/staging/media/imx/imx-media-of.c @@ -23,36 +23,25 @@ int imx_media_of_add_csi(struct imx_media_dev *imxmd, struct device_node *csi_np) { - int ret; - if (!of_device_is_available(csi_np)) { dev_dbg(imxmd->md.dev, "%s: %pOFn not enabled\n", __func__, csi_np); - /* unavailable is not an error */ - return 0; + return -ENODEV; } /* add CSI fwnode to async notifier */ - ret = imx_media_add_async_subdev(imxmd, of_fwnode_handle(csi_np), NULL); - if (ret) { - if (ret == -EEXIST) { - /* already added, everything is fine */ - return 0; - } - - /* other error, can't continue */ - return ret; - } - - return 0; + return imx_media_add_async_subdev(imxmd, of_fwnode_handle(csi_np), + NULL); } EXPORT_SYMBOL_GPL(imx_media_of_add_csi); int imx_media_add_of_subdevs(struct imx_media_dev *imxmd, struct device_node *np) { + bool ipu_found[2] = {false, false}; struct device_node *csi_np; int i, ret; + u32 ipu_id; for (i = 0; ; i++) { csi_np = of_parse_phandle(np, "ports", i); @@ -60,12 +49,43 @@ int imx_media_add_of_subdevs(struct imx_ break; ret = imx_media_of_add_csi(imxmd, csi_np); - of_node_put(csi_np); - if (ret) - return ret; + if (ret) { + /* unavailable or already added is not an error */ + if (ret == -ENODEV || ret == -EEXIST) { + of_node_put(csi_np); + continue; + } + + /* other error, can't continue */ + goto err_out; + } + + ret = of_alias_get_id(csi_np->parent, "ipu"); + if (ret < 0) + goto err_out; + if (ret > 1) { + ret = -EINVAL; + goto err_out; + } + + ipu_id = ret; + + if (!ipu_found[ipu_id]) { + ret = imx_media_add_ipu_internal_subdevs(imxmd, + ipu_id); + if (ret) + goto err_out; + } + + ipu_found[ipu_id] = true; } return 0; + +err_out: + imx_media_remove_ipu_internal_subdevs(imxmd); + of_node_put(csi_np); + return ret; } /* --- a/drivers/staging/media/imx/imx-media.h +++ b/drivers/staging/media/imx/imx-media.h @@ -252,7 +252,8 @@ struct imx_media_fim *imx_media_fim_init void imx_media_fim_free(struct imx_media_fim *fim); /* imx-media-internal-sd.c */ -int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd); +int imx_media_add_ipu_internal_subdevs(struct imx_media_dev *imxmd, + int ipu_id); int imx_media_create_ipu_internal_links(struct imx_media_dev *imxmd, struct v4l2_subdev *sd); void imx_media_remove_ipu_internal_subdevs(struct imx_media_dev *imxmd); --- a/drivers/staging/media/imx/imx7-media-csi.c +++ b/drivers/staging/media/imx/imx7-media-csi.c @@ -1271,7 +1271,7 @@ static int imx7_csi_probe(struct platfor platform_set_drvdata(pdev, &csi->sd); ret = imx_media_of_add_csi(imxmd, node); - if (ret < 0) + if (ret < 0 && ret != -ENODEV && ret != -EEXIST) goto cleanup; ret = imx_media_dev_notifier_register(imxmd);