From patchwork Tue Oct 27 13:54:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 312943 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=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 1E279C55178 for ; Tue, 27 Oct 2020 14:27:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF24C207C3 for ; Tue, 27 Oct 2020 14:27:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603808831; bh=AefztVxE247r/15WJhExeyA+8dmtNdisr4SlZ+oRDNw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Yobb1VxTdv1RFyoNTJ9N3tp8snMgR6MbL1M/wUlnV+PrmCWR83GXuHWLpzh3VJghP Rcg+enl/7BRs+p/b97tmmaTJ7Ch9pQBGSTxNAJWUvHOcQHM3ILidHMS94JYxvWNar9 xbeHAyEb1cIZPUEIlmG6dtA9mcMW8vvLa4q7YSFg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759008AbgJ0O1K (ORCPT ); Tue, 27 Oct 2020 10:27:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:53150 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2901819AbgJ0O1J (ORCPT ); Tue, 27 Oct 2020 10:27:09 -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 3617B20780; Tue, 27 Oct 2020 14:27:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603808828; bh=AefztVxE247r/15WJhExeyA+8dmtNdisr4SlZ+oRDNw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AqxEBEmtSq/rcGRZ3Y90xoRKeXQr8vGFqNShJFct1FDnsLVVl7/c6FMjuoRSUhBkc Dv/EIl4s/TPHF2InYreS3LNZPFcQEE0IJpasX6ZGBfpOwnWMpZJHLLAgsnoJH/ozyX 1LbEYnwuq+arcCrkJWJOtp84gS5ghtBn7Q1Q/pD8= 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 4.19 212/264] media: exynos4-is: Fix several reference count leaks due to pm_runtime_get_sync Date: Tue, 27 Oct 2020 14:54:30 +0100 Message-Id: <20201027135440.634878414@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135430.632029009@linuxfoundation.org> References: <20201027135430.632029009@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 9a48c0f69320b..1dbebdc1c2f87 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp.c +++ b/drivers/media/platform/exynos4-is/fimc-isp.c @@ -311,8 +311,10 @@ 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 70d5f5586a5d5..10fe7d2e8790c 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -480,7 +480,7 @@ 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)