From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 381A1FBF6 for ; Mon, 15 May 2023 17:55:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB61AC4339B; Mon, 15 May 2023 17:55:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684173340; bh=xEI/SGk3dVUjk/+bYPMd8dWbnHNJOerA/s83AmY6AC8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MK6xQ9PHZHg1kgR1XHIzu/TPA+fWjyb4VviykDjrC0B8Z2AC10ddRvFbHmjB/jDNR r/R9794vSHAJUxi+LDQFhre+V+jBFYYaP4z2aS2ihC9UZi15ctwLXCfbMKUHfJpZDv VaWYMjaxnYjiDdN6FpmznE3eCgkI8ytJM30sLzA8= 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 5.4 062/282] media: rcar_fdp1: Fix refcount leak in probe and remove function Date: Mon, 15 May 2023 18:27:20 +0200 Message-Id: <20230515161724.101708306@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161722.146344674@linuxfoundation.org> References: <20230515161722.146344674@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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/rcar_fdp1.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/rcar_fdp1.c b/drivers/media/platform/rcar_fdp1.c index 0967b10a459b1..af2408b4856e6 100644 --- a/drivers/media/platform/rcar_fdp1.c +++ b/drivers/media/platform/rcar_fdp1.c @@ -2317,8 +2317,10 @@ 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); @@ -2327,7 +2329,7 @@ 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 */ @@ -2397,6 +2399,8 @@ 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; } @@ -2408,6 +2412,7 @@ static int 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); return 0; } -- 2.39.2