From patchwork Sat Aug 15 10:37:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dafna Hirschfeld X-Patchwork-Id: 11715393 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 68DCB13A4 for ; Sat, 15 Aug 2020 10:38:16 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4323C2310B for ; Sat, 15 Aug 2020 10:38:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="gMg3zPWz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4323C2310B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=c7UW0LqN3XDIfN0NkTHoGhYWk7w/Z5PtzRJDYsLsnHM=; b=gMg3zPWzXq4BS4abaYQdMZeCBw 5T4rxIwpoJ2OcIkZnzOhDtRk2xjrYCKeg08VtZe1WfvlTWEcZyh9e40rK4Pp42WpVo6+uQC639X2M y2H8vYRrXDWe9d6k6U8VYqJAsZQbNRAsDbE8RTYEPQum5YXjj00F7+lhnjYT6P4Eu8WBjcynE8cVY AMBF3F6nH3XueLIn7f/JrdZizQuJy7j5nDOi50MJW3DSLRhHRFdBXNK2L1MPgP2vnRsZaAHOWugRy 38qPImscu66+bYuNhWENTEFGGsd22dJvz26T2Np7Uer3zhIPImf975fQKBnuyUt3m10ICIcSZ3k8T w7/+jKqg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k6tZk-0001Or-PF; Sat, 15 Aug 2020 10:38:12 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k6tZY-0001GM-Ag for linux-rockchip@lists.infradead.org; Sat, 15 Aug 2020 10:38:05 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: dafna) with ESMTPSA id 1CA0A29A7CE From: Dafna Hirschfeld To: linux-media@vger.kernel.org Subject: [PATCH v2 12/14] media: staging: rkisp1: stats: protect write to 'is_streaming' in start_streaming cb Date: Sat, 15 Aug 2020 12:37:32 +0200 Message-Id: <20200815103734.31153-13-dafna.hirschfeld@collabora.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200815103734.31153-1-dafna.hirschfeld@collabora.com> References: <20200815103734.31153-1-dafna.hirschfeld@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200815_063800_546420_F5C890A1 X-CRM114-Status: UNSURE ( 9.85 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [46.235.227.227 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mchehab@kernel.org, dafna.hirschfeld@collabora.com, dafna3@gmail.com, tfiga@chromium.org, hverkuil@xs4all.nl, linux-rockchip@lists.infradead.org, helen.koike@collabora.com, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, kernel@collabora.com, ezequiel@collabora.com MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org The field stats->is_streaming is written in 'start_streaming' callback without the stats->lock protection. The isr might run together with the callback so 'spin_lock_irq' should be used. Signed-off-by: Dafna Hirschfeld Acked-by: Helen Koike --- drivers/staging/media/rkisp1/rkisp1-stats.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/media/rkisp1/rkisp1-stats.c b/drivers/staging/media/rkisp1/rkisp1-stats.c index 52417b388854..c86beba709db 100644 --- a/drivers/staging/media/rkisp1/rkisp1-stats.c +++ b/drivers/staging/media/rkisp1/rkisp1-stats.c @@ -157,7 +157,9 @@ rkisp1_stats_vb2_start_streaming(struct vb2_queue *queue, unsigned int count) { struct rkisp1_stats *stats = queue->drv_priv; + spin_lock_irq(&stats->lock); stats->is_streaming = true; + spin_unlock_irq(&stats->lock); return 0; }