From patchwork Tue Apr 27 10:12:36 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: 428206 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=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 076E7C43460 for ; Tue, 27 Apr 2021 10:14:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D03E660FF1 for ; Tue, 27 Apr 2021 10:14:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235598AbhD0KOt (ORCPT ); Tue, 27 Apr 2021 06:14:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:34866 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235366AbhD0KOf (ORCPT ); Tue, 27 Apr 2021 06:14:35 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E6F2B613C9; Tue, 27 Apr 2021 10:13:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1619518431; bh=XfZSeMotNFyXbfT608pw1ECU5JJkssXPopFyWbltzaE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nr2lUUMOHAMasRjwlY5qX3qVA4oegZ5AgUvpL6usdP7kYYZZZM6TsC32yW50v4n6u tcvNRQPCPk6KdTQhVAuWpm8L6wfnAnIjOKNjBAs6jwHBPaBboSwVTtHXpbVHICzTcc 1lBOKpP8EbMRNwPR8QTTYS2F24GO8hT3AURqYHmbXcQqcXviY2sO/li0wDxoeiLi33 nc5lIPv6zUXjHIDqnptAPfdDLqX7OdAffVBQPSFke/Wxl7TBV7w+dNNYe8y48V1rZU mz502CLIOs0MXwwcj+kyRx0Ho46obWLtWanADRaK/TUGgaFs6xRbkw6cpbsKRwfj97 jsoJG5CIc2oSA== Received: by mail.kernel.org with local (Exim 4.94) (envelope-from ) id 1lbKiy-000j51-J8; Tue, 27 Apr 2021 12:13:48 +0200 From: Mauro Carvalho Chehab Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Mauro Carvalho Chehab , Andrew-CT Chen , Houlong Wei , Matthias Brugger , Mauro Carvalho Chehab , Minghsiu Tsai , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org Subject: [PATCH v2 09/79] media: mdk-mdp: fix pm_runtime_get_sync() usage count Date: Tue, 27 Apr 2021 12:12:36 +0200 Message-Id: <36568b7ce611dfaf4abc3233c76018a137f934c8.1619518193.git.mchehab+huawei@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: References: MIME-Version: 1.0 Sender: Mauro Carvalho Chehab To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.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 and avoid memory leaks. While here, fix the return contition of mtk_mdp_m2m_start_streaming(), as it doesn't make any sense to return 0 if the PM runtime failed to resume. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c index ace4528cdc5e..f14779e7596e 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c @@ -391,12 +391,12 @@ static int mtk_mdp_m2m_start_streaming(struct vb2_queue *q, unsigned int count) struct mtk_mdp_ctx *ctx = q->drv_priv; int ret; - ret = pm_runtime_get_sync(&ctx->mdp_dev->pdev->dev); + ret = pm_runtime_resume_and_get(&ctx->mdp_dev->pdev->dev); if (ret < 0) - mtk_mdp_dbg(1, "[%d] pm_runtime_get_sync failed:%d", + mtk_mdp_dbg(1, "[%d] pm_runtime_resume_and_get failed:%d", ctx->id, ret); - return 0; + return ret; } static void *mtk_mdp_m2m_buf_remove(struct mtk_mdp_ctx *ctx,