From patchwork Mon Jul 12 06:04:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 474383 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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, 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 E4FDDC07E9C for ; Mon, 12 Jul 2021 06:34:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C994161004 for ; Mon, 12 Jul 2021 06:34:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236303AbhGLGhN (ORCPT ); Mon, 12 Jul 2021 02:37:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:54638 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235989AbhGLGfn (ORCPT ); Mon, 12 Jul 2021 02:35:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7813F610FB; Mon, 12 Jul 2021 06:32:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626071568; bh=roqyspRFC1/DgrllRoflMHE9bkjkXJi48MaQ1+M2RGU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QF1jSCloWj6H0NgyCVzInSpZTsBT0XjOGVNjA3WE3FhS2zotV9Sq6/57kZHDAlWXx c9U3vbLKUs4ceJ1qLegtjQUI85ZnG9tGEUdImapYIGUznaKFE7AzQIImLj0R/OpsH/ 0KaB26YoJ/moUr0EXthj+2Hdk6rPbYaxEhwplr30= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Sylwester Nawrocki , Andrzej Pietrasiewicz , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.10 109/593] media: s5p-jpeg: fix pm_runtime_get_sync() usage count Date: Mon, 12 Jul 2021 08:04:29 +0200 Message-Id: <20210712060855.202433134@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060843.180606720@linuxfoundation.org> References: <20210712060843.180606720@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mauro Carvalho Chehab [ Upstream commit 10343de268d10cf07b092b8b525e12ad558ead77 ] 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. As a plus, pm_runtime_resume_and_get() doesn't return positive numbers, so the return code validation can be removed. Reviewed-by: Jonathan Cameron Reviewed-by: Sylwester Nawrocki Acked-by: Andrzej Pietrasiewicz Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/s5p-jpeg/jpeg-core.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 9b22dd8e34f4..d515eb08c3ee 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -2566,11 +2566,8 @@ static void s5p_jpeg_buf_queue(struct vb2_buffer *vb) static int s5p_jpeg_start_streaming(struct vb2_queue *q, unsigned int count) { struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q); - int ret; - - ret = pm_runtime_get_sync(ctx->jpeg->dev); - return ret > 0 ? 0 : ret; + return pm_runtime_resume_and_get(ctx->jpeg->dev); } static void s5p_jpeg_stop_streaming(struct vb2_queue *q)