From patchwork Wed May 5 09:42:00 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: 431420 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,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 D2927C4361A for ; Wed, 5 May 2021 09:42:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C386613ED for ; Wed, 5 May 2021 09:42:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232963AbhEEJnh (ORCPT ); Wed, 5 May 2021 05:43:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:48606 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232373AbhEEJnQ (ORCPT ); Wed, 5 May 2021 05:43:16 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 259DC61413; 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=q4BhlNxVlfORYoTSi6feVaPNYXcgoQfMmzgINIkBslA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gZZ6FCv1SxMi1afk7/pU/SwP6ou74/YfwYgWeC31Q79Id6PKiXTKPuUEwZNpVsIS2 8+l/ox5g5VrLkHNKCukkKp4I5sTifdejUqTXV5dYmccnOkhASD0g8zj66EDZK3UBNL gribrjV4HqU4el2XqHfttulrZbXTkEzPv3voDofmMvNRzIe7XoXIGRujoQkV3nR67a wydyl/+0O4moqE13TVmVrNdtjGZI/1sIyzLrcojS8H7l6GO//qKQJ3VJdk/eGKzxvk 7cLH2bcr5QI7axI8N9yO8LVYUlA3FU9F4AbTkxbbb+PS9O5OS3XQnJL+KiLnOx+UYV Jfh4KEBfJJWmQ== Received: by mail.kernel.org with local (Exim 4.94) (envelope-from ) id 1leE2r-00AHwI-1C; Wed, 05 May 2021 11:42:17 +0200 From: Mauro Carvalho Chehab Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Mauro Carvalho Chehab , "Gustavo A. R. Silva" , Allen Pais , Chuhong Yuan , Ezequiel Garcia , Hans Verkuil , Helen Koike , Lubomir Rintel , Mauro Carvalho Chehab , Sakari Ailus , Vaibhav Gupta , linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Jonathan Cameron Subject: [PATCH 10/25] media: marvel-ccic: fix some issues when getting pm_runtime Date: Wed, 5 May 2021 11:42:00 +0200 Message-Id: <0ecf2ea9295dcf08ae6e1ae29ca3bc9ab3221a7c.1620207353.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 Calling pm_runtime_get_sync() is bad, since even when it returns an error, pm_runtime_put*() should be called. So, use instead pm_runtime_resume_and_get(). While here, ensure that the error condition will be checked during clock enable an media open() calls. Reviewed-by: Jonathan Cameron Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/marvell-ccic/mcam-core.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c index 141bf5d97a04..ea87110d9073 100644 --- a/drivers/media/platform/marvell-ccic/mcam-core.c +++ b/drivers/media/platform/marvell-ccic/mcam-core.c @@ -918,6 +918,7 @@ static int mclk_enable(struct clk_hw *hw) struct mcam_camera *cam = container_of(hw, struct mcam_camera, mclk_hw); int mclk_src; int mclk_div; + int ret; /* * Clock the sensor appropriately. Controller clock should @@ -931,7 +932,9 @@ static int mclk_enable(struct clk_hw *hw) mclk_div = 2; } - pm_runtime_get_sync(cam->dev); + ret = pm_runtime_resume_and_get(cam->dev); + if (ret < 0) + return ret; clk_enable(cam->clk[0]); mcam_reg_write(cam, REG_CLKCTRL, (mclk_src << 29) | mclk_div); mcam_ctlr_power_up(cam); @@ -1611,7 +1614,9 @@ static int mcam_v4l_open(struct file *filp) ret = sensor_call(cam, core, s_power, 1); if (ret) goto out; - pm_runtime_get_sync(cam->dev); + ret = pm_runtime_resume_and_get(cam->dev); + if (ret < 0) + goto out; __mcam_cam_reset(cam); mcam_set_config_needed(cam, 1); }