From patchwork Wed May 5 09:42:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12239563 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=-17.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, 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 6BE08C433B4 for ; Wed, 5 May 2021 09:47:34 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 311A8613EC for ; Wed, 5 May 2021 09:47:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 311A8613EC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gPmTYbPB6ERTey/G5YkfYR5TucfqFv2qPGzbeAwSSaU=; b=LhyqqFZPbNpOUEpUuHWdWdcrj UJlcRn8T/o0WptJdOQu5LRprFMPmCnmoQfHapriO7XXfE1kwWvpNKrbim6exs6D0UKC1HuQq1eDXF CeCjm8Z+sNlakeP9qM6eTRXzRIYuhwh258Zb8g4UJKY14L09e6LKAROTOGqs3XG5vDo0f0drPf+YT rP1mLMwVeAiW/gQXhh+QEiiz1D6j6ANqJg3n9ngzdOguowGO1NsZBxETn7mlOB5IEq2JWjnYxyhKX 5t95ba3RF/ccgBoE9/GzYg/olqKAtJ/ng4s9cDKttji0AYVEMdWnXyjTwzOV02FBAhI3iirA8mTGl oxfIC8fUw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1leE6D-000mNP-Uj; Wed, 05 May 2021 09:45:46 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1leE33-000l4e-J4 for linux-arm-kernel@lists.infradead.org; Wed, 05 May 2021 09:42:34 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7452861441; Wed, 5 May 2021 09:42:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620207739; bh=364y8EHJw+K9cWcJ3TfK59fyAMvbTh2YZ4HqAVyg8A8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KndRsQn6wUyNi6eN7k33M1w7kqzJ24+MX/2EQ0eQjTL8hFb+QvTYQcVyx3lu26OZz /6e553NH+Go/bMLU3TXK+Y3rjWMtO0RryzewWuUkbMjKDIwFPpi7sfyrBUJs6ny0hC /6HGkeImhGk8ixnl0PFf4rJe+zxn6hmgeZbk2MKJpZTXhUn6M25A/DNR4/iaJIYue7 8cf/K3YZ8ysnQpz04o8qVWiibQ+Hhu5zWH7ec9xHyjTbVCG3qoHupemmTLNl2SmGtr PavTMKvW4zjUj74wRAztvZkpXYiA+ykl0dZxxlTxhhcKse87GIQiPyPryZfwfueTep 3Pp+Z6bLFeeSA== Received: by mail.kernel.org with local (Exim 4.94) (envelope-from ) id 1leE2r-00AHwp-G3; Wed, 05 May 2021 11:42:17 +0200 From: Mauro Carvalho Chehab To: Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Mauro Carvalho Chehab , Chen-Yu Tsai , Jernej Skrabec , Mauro Carvalho Chehab , Maxime Ripard , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-sunxi@lists.linux.dev, Jonathan Cameron Subject: [PATCH 21/25] media: sunxi: fix pm_runtime_get_sync() usage count Date: Wed, 5 May 2021 11:42:11 +0200 Message-Id: <0dea9a799700efd0f3ceaf9d25ded282295e2db9.1620207353.git.mchehab+huawei@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210505_104231_210539_0FBF8F30 X-CRM114-Status: GOOD ( 12.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The pm_runtime_get_sync() internally increments the dev->power.usage_count without decrementing it, even on errors. Replace it by the new pm_runtime_resume_and_get(), introduced by: commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter") in order to properly decrement the usage counter, avoiding a potential PM usage counter leak. Reviewed-by: Jonathan Cameron Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c index 3f81dd17755c..fbcca59a0517 100644 --- a/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c +++ b/drivers/media/platform/sunxi/sun8i-rotate/sun8i_rotate.c @@ -494,7 +494,7 @@ static int rotate_start_streaming(struct vb2_queue *vq, unsigned int count) struct device *dev = ctx->dev->dev; int ret; - ret = pm_runtime_get_sync(dev); + ret = pm_runtime_resume_and_get(dev); if (ret < 0) { dev_err(dev, "Failed to enable module\n");