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 F08B3C77B73 for ; Mon, 8 May 2023 10:32:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234692AbjEHKcM (ORCPT ); Mon, 8 May 2023 06:32:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234767AbjEHKbu (ORCPT ); Mon, 8 May 2023 06:31:50 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35FBE32913 for ; Mon, 8 May 2023 03:31:29 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 6B4E6626E0 for ; Mon, 8 May 2023 10:31:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61E58C433EF; Mon, 8 May 2023 10:31:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683541885; bh=RpvIW+Ft0dC7DEmCAfNsCksIyZQLKRaSClsheU1onvg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2M2wUn8fq6u7DPU+qZDXQ5Snzl75oprlxPX/b7wTmc7u5iCQxRwOVL6Vd+map790g nxLEkZ/1fAwFDwxEYwPxbA9v6VRBBiq3+4MDHExndT3ps+bFdyB4Iy2EJ34IW3Rjqp b8Ud6jeZhxbZxyEPDgu4yqO7AnuYNvM3xyQXflk8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Miaoqian Lin , Laurent Pinchart , Hans Verkuil , Sasha Levin Subject: [PATCH 6.2 259/663] media: rcar_fdp1: Fix refcount leak in probe and remove function Date: Mon, 8 May 2023 11:41:25 +0200 Message-Id: <20230508094436.653621688@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094428.384831245@linuxfoundation.org> References: <20230508094428.384831245@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Miaoqian Lin [ Upstream commit c766c90faf93897b77c9c5daa603cffab85ba907 ] rcar_fcp_get() take reference, which should be balanced with rcar_fcp_put(). Add missing rcar_fcp_put() in fdp1_remove and the error paths of fdp1_probe() to fix this. Fixes: 4710b752e029 ("[media] v4l: Add Renesas R-Car FDP1 Driver") Signed-off-by: Miaoqian Lin Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart [hverkuil: resolve merge conflict, remove() is now void] Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/platform/renesas/rcar_fdp1.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/renesas/rcar_fdp1.c b/drivers/media/platform/renesas/rcar_fdp1.c index d80b3214dfae1..c548cb01957b0 100644 --- a/drivers/media/platform/renesas/rcar_fdp1.c +++ b/drivers/media/platform/renesas/rcar_fdp1.c @@ -2313,8 +2313,10 @@ static int fdp1_probe(struct platform_device *pdev) /* Determine our clock rate */ clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(clk)) - return PTR_ERR(clk); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + goto put_dev; + } fdp1->clk_rate = clk_get_rate(clk); clk_put(clk); @@ -2323,7 +2325,7 @@ static int fdp1_probe(struct platform_device *pdev) ret = v4l2_device_register(&pdev->dev, &fdp1->v4l2_dev); if (ret) { v4l2_err(&fdp1->v4l2_dev, "Failed to register video device\n"); - return ret; + goto put_dev; } /* M2M registration */ @@ -2393,6 +2395,8 @@ static int fdp1_probe(struct platform_device *pdev) unreg_dev: v4l2_device_unregister(&fdp1->v4l2_dev); +put_dev: + rcar_fcp_put(fdp1->fcp); return ret; } @@ -2404,6 +2408,7 @@ static void fdp1_remove(struct platform_device *pdev) video_unregister_device(&fdp1->vfd); v4l2_device_unregister(&fdp1->v4l2_dev); pm_runtime_disable(&pdev->dev); + rcar_fcp_put(fdp1->fcp); } static int __maybe_unused fdp1_pm_runtime_suspend(struct device *dev) -- 2.39.2