From patchwork Tue Oct 27 13:54:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 307265 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 013DAC55178 for ; Tue, 27 Oct 2020 16:53:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B06AA20728 for ; Tue, 27 Oct 2020 16:53:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603817612; bh=Buv2dVNq0Tkli/0x+OUC2acHwZGGA/Z5YDjL+nyPK8I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=wVAj+R1MWEgaV+Z1wPb/XBncV6rQLO7w4CQ5K1BKLGotp+4h9szKpCE4BoL8y93H7 l77MLhwOKFscTGRDMKJGp1h8EB0kGFrkIOsiP7U55Hn9Ux3Ej9XGAkehMPZGiQcTXG qU6vP59H52E6h/FyvswmAyiPhn8XDTcA/JA07sXk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1813681AbgJ0Qx2 (ORCPT ); Tue, 27 Oct 2020 12:53:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:49248 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1794625AbgJ0PMo (ORCPT ); Tue, 27 Oct 2020 11:12:44 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 B44BE2071A; Tue, 27 Oct 2020 15:12:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603811563; bh=Buv2dVNq0Tkli/0x+OUC2acHwZGGA/Z5YDjL+nyPK8I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bWQyjRCcVb04RGjb7UJjCcq8IXJSKt5W7UH7GQ4oFy9x4AlaN2L0cAun0SKItvJJP KMKxHhwW3rbzSdjVBvI/OsFTnIgzeqthGkktl5emZBFTzS/mM/89GOVXipYrVkg0jH EyUYMsJcofQvzYU+HSb1Op6fAI3jvLycS4jwtfeY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Qiushi Wu , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.8 537/633] media: exynos4-is: Fix several reference count leaks due to pm_runtime_get_sync Date: Tue, 27 Oct 2020 14:54:40 +0100 Message-Id: <20201027135547.980556644@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135522.655719020@linuxfoundation.org> References: <20201027135522.655719020@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Qiushi Wu [ Upstream commit 7ef64ceea0008c17e94a8a2c60c5d6d46f481996 ] On calling pm_runtime_get_sync() the reference count of the device is incremented. In case of failure, decrement the reference count before returning the error. Signed-off-by: Qiushi Wu Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/exynos4-is/fimc-isp.c | 4 +++- drivers/media/platform/exynos4-is/fimc-lite.c | 2 +- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c b/drivers/media/platform/exynos4-is/fimc-isp.c index cde0d254ec1c4..a77c49b185115 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp.c +++ b/drivers/media/platform/exynos4-is/fimc-isp.c @@ -305,8 +305,10 @@ static int fimc_isp_subdev_s_power(struct v4l2_subdev *sd, int on) if (on) { ret = pm_runtime_get_sync(&is->pdev->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put(&is->pdev->dev); return ret; + } set_bit(IS_ST_PWR_ON, &is->state); ret = fimc_is_start_firmware(is); diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index 394e0818f2d5c..92130d7791378 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -470,7 +470,7 @@ static int fimc_lite_open(struct file *file) set_bit(ST_FLITE_IN_USE, &fimc->state); ret = pm_runtime_get_sync(&fimc->pdev->dev); if (ret < 0) - goto unlock; + goto err_pm; ret = v4l2_fh_open(file); if (ret < 0)