From patchwork Wed May 12 14:47:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 437933 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, 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 AEFA0C433B4 for ; Wed, 12 May 2021 16:53:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D89D61183 for ; Wed, 12 May 2021 16:53:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230479AbhELQxk (ORCPT ); Wed, 12 May 2021 12:53:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:33526 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243678AbhELQly (ORCPT ); Wed, 12 May 2021 12:41:54 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id CF71D6199F; Wed, 12 May 2021 16:05:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620835558; bh=9HinY/uZkUmhyMFm2nkBUtRa5FEUa1gHGiefwamc3sY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=V4pvQyBFq7prfK8cGeXgcqg0gDMX6hQbffBAnjYNAUgw7FuZhh0J4Gqbu1stiB7Dp oH1iB0Rw7Zk905qPR2DnDODN3QaqVJiD6tyUEAKb3haMp1YZChSnjNJW702hwfFyjz rNJMAe+vLTmI0Gh28mAWw6uLV2+CgAJWgfrN7WTw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pavel Machek , Lad Prabhakar , Laurent Pinchart , Sakari Ailus , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.12 392/677] media: i2c: imx219: Balance runtime PM use-count Date: Wed, 12 May 2021 16:47:18 +0200 Message-Id: <20210512144850.355446959@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144837.204217980@linuxfoundation.org> References: <20210512144837.204217980@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Lad Prabhakar [ Upstream commit dd90caa0111e178b52b21e56364bc2244a3973b3 ] Move incrementing/decrementing runtime PM count to imx219_start_streaming()/imx219_stop_streaming() functions respectively. This fixes an issue of unbalanced runtime PM count in resume callback error path where streaming is stopped and runtime PM count is left unbalanced. Fixes: 1283b3b8f82b9 ("media: i2c: Add driver for Sony IMX219 sensor") Reported-by: Pavel Machek Signed-off-by: Lad Prabhakar Reviewed-by: Laurent Pinchart Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/i2c/imx219.c | 32 +++++++++++++++++--------------- 1 file changed, 17 insertions(+), 15 deletions(-) diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c index 82756cbfbaac..49ba39418360 100644 --- a/drivers/media/i2c/imx219.c +++ b/drivers/media/i2c/imx219.c @@ -1035,37 +1035,47 @@ static int imx219_start_streaming(struct imx219 *imx219) const struct imx219_reg_list *reg_list; int ret; + ret = pm_runtime_get_sync(&client->dev); + if (ret < 0) { + pm_runtime_put_noidle(&client->dev); + return ret; + } + /* Apply default values of current mode */ reg_list = &imx219->mode->reg_list; ret = imx219_write_regs(imx219, reg_list->regs, reg_list->num_of_regs); if (ret) { dev_err(&client->dev, "%s failed to set mode\n", __func__); - return ret; + goto err_rpm_put; } ret = imx219_set_framefmt(imx219); if (ret) { dev_err(&client->dev, "%s failed to set frame format: %d\n", __func__, ret); - return ret; + goto err_rpm_put; } /* Apply customized values from user */ ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler); if (ret) - return ret; + goto err_rpm_put; /* set stream on register */ ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING); if (ret) - return ret; + goto err_rpm_put; /* vflip and hflip cannot change during streaming */ __v4l2_ctrl_grab(imx219->vflip, true); __v4l2_ctrl_grab(imx219->hflip, true); return 0; + +err_rpm_put: + pm_runtime_put(&client->dev); + return ret; } static void imx219_stop_streaming(struct imx219 *imx219) @@ -1081,12 +1091,13 @@ static void imx219_stop_streaming(struct imx219 *imx219) __v4l2_ctrl_grab(imx219->vflip, false); __v4l2_ctrl_grab(imx219->hflip, false); + + pm_runtime_put(&client->dev); } static int imx219_set_stream(struct v4l2_subdev *sd, int enable) { struct imx219 *imx219 = to_imx219(sd); - struct i2c_client *client = v4l2_get_subdevdata(sd); int ret = 0; mutex_lock(&imx219->mutex); @@ -1096,22 +1107,15 @@ static int imx219_set_stream(struct v4l2_subdev *sd, int enable) } if (enable) { - ret = pm_runtime_get_sync(&client->dev); - if (ret < 0) { - pm_runtime_put_noidle(&client->dev); - goto err_unlock; - } - /* * Apply default & customized values * and then start streaming. */ ret = imx219_start_streaming(imx219); if (ret) - goto err_rpm_put; + goto err_unlock; } else { imx219_stop_streaming(imx219); - pm_runtime_put(&client->dev); } imx219->streaming = enable; @@ -1120,8 +1124,6 @@ static int imx219_set_stream(struct v4l2_subdev *sd, int enable) return ret; -err_rpm_put: - pm_runtime_put(&client->dev); err_unlock: mutex_unlock(&imx219->mutex);