From patchwork Tue Oct 27 13:46:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 312627 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 A6052C83024 for ; Tue, 27 Oct 2020 15:27:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A15D20728 for ; Tue, 27 Oct 2020 15:27:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603812440; bh=AevS3VJiIWV6RWC+KJ2jiUeCQrep6DzQMeOmMC+G+wo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vWieDGVowXyAaP02xWp5P11RO771vUuyXoH43hETkCitiw4MaRtYzKpsYWlKFUoEb GLRJ0nsnlXSdSwmd69jLfcFNjLk0hpalu7OEb7WLp640S9qnBVWXt6QLDW0bzISvqF M3GaZqb7ZeykTBYv/phynNkjuPjwPGQP7L5FVDcE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S368744AbgJ0P1R (ORCPT ); Tue, 27 Oct 2020 11:27:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:40538 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1797960AbgJ0PZW (ORCPT ); Tue, 27 Oct 2020 11:25:22 -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 B3D172064B; Tue, 27 Oct 2020 15:25:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603812322; bh=AevS3VJiIWV6RWC+KJ2jiUeCQrep6DzQMeOmMC+G+wo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=koThp75inqLEM9AZoI3Vt+HA8q3qXGP0KT6pUgzyE/JIFnWinpW+flnxaEiu5bVVQ W1JB2rkE/9nnn4chKxnp4mVoIY7HA0aodIums1pYW4uVidh0Iz01Ee4wjRgJ8qP7Wk Rmg9Srj5NX/Crn3d9kx2kkLlFOBvfbp0lh6Apk4I= 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 5.9 168/757] media: platform: fcp: Fix a reference count leak. Date: Tue, 27 Oct 2020 14:46:58 +0100 Message-Id: <20201027135458.476387225@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135450.497324313@linuxfoundation.org> References: <20201027135450.497324313@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 63e36a381d92a9cded97e90d481ee22566557dd1 ] pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code, causing incorrect ref count if pm_runtime_put_noidle() is not called in error handling paths. Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails. Fixes: 6eaafbdb668b ("[media] v4l: rcar-fcp: Keep the coding style consistent") Signed-off-by: Qiushi Wu Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/rcar-fcp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/rcar-fcp.c b/drivers/media/platform/rcar-fcp.c index 5c6b00737fe75..05c712e00a2a7 100644 --- a/drivers/media/platform/rcar-fcp.c +++ b/drivers/media/platform/rcar-fcp.c @@ -103,8 +103,10 @@ int rcar_fcp_enable(struct rcar_fcp_device *fcp) return 0; ret = pm_runtime_get_sync(fcp->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_noidle(fcp->dev); return ret; + } return 0; }