From patchwork Wed Mar 10 12:20:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar Mahadev Lad X-Patchwork-Id: 72030 X-Patchwork-Delegate: sakari.ailus@iki.fi Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1lJxqg-00AHjK-Su; Wed, 10 Mar 2021 12:21:59 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232815AbhCJMV0 (ORCPT + 1 other); Wed, 10 Mar 2021 07:21:26 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:54059 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232621AbhCJMUy (ORCPT ); Wed, 10 Mar 2021 07:20:54 -0500 X-IronPort-AV: E=Sophos;i="5.81,237,1610377200"; d="scan'208";a="74452145" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 10 Mar 2021 21:20:53 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 922AA40108E4; Wed, 10 Mar 2021 21:20:50 +0900 (JST) From: Lad Prabhakar To: Dave Stevenson , Mauro Carvalho Chehab Cc: Pavel Machek , Andrey Konovalov , Sakari Ailus , Laurent Pinchart , Jacopo Mondi , Hans Verkuil , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Lad Prabhakar , Biju Das Subject: [PATCH 2/3] media: i2c: imx219: Serialize during stream start/stop Date: Wed, 10 Mar 2021 12:20:13 +0000 Message-Id: <20210310122014.28353-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210310122014.28353-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20210310122014.28353-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -2.4 (--) X-LSpam-Report: No, score=-2.4 required=5.0 tests=BAYES_00=-1.9,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1 autolearn=ham autolearn_force=no Serialize during stream start/stop in suspend/resume callbacks. Signed-off-by: Lad Prabhakar --- drivers/media/i2c/imx219.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c index f0cf1985a4dc..87c021de1460 100644 --- a/drivers/media/i2c/imx219.c +++ b/drivers/media/i2c/imx219.c @@ -1172,8 +1172,10 @@ static int __maybe_unused imx219_suspend(struct device *dev) struct v4l2_subdev *sd = dev_get_drvdata(dev); struct imx219 *imx219 = to_imx219(sd); + mutex_lock(&imx219->mutex); if (imx219->streaming) imx219_stop_streaming(imx219); + mutex_unlock(&imx219->mutex); return 0; } @@ -1184,11 +1186,13 @@ static int __maybe_unused imx219_resume(struct device *dev) struct imx219 *imx219 = to_imx219(sd); int ret; + mutex_lock(&imx219->mutex); if (imx219->streaming) { ret = imx219_start_streaming(imx219); if (ret) goto error; } + mutex_unlock(&imx219->mutex); return 0; @@ -1197,6 +1201,7 @@ static int __maybe_unused imx219_resume(struct device *dev) imx219->streaming = false; __v4l2_ctrl_grab(imx219->vflip, false); __v4l2_ctrl_grab(imx219->hflip, false); + mutex_unlock(&imx219->mutex); return ret; }