From patchwork Sat Jul 16 09:38:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Irui Wang X-Patchwork-Id: 12920049 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9D5A9C43334 for ; Sat, 16 Jul 2022 09:51:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xw4eWtQOLW7mcqbbS4idJkCMMFrf5NTkJ6oi4I2EKWI=; b=YE5z0e+rNsL/h9 AmaDcydVcJ/eSHkLRCmTCtZmOLcqjqvzvNl8A82ZmHrkgFzdbQMu/LYcUKWo3mK20BpaZZg6PVIXj QPQG82f0ZEJVfKrnIV9qlHOnFEukJUuDYm7RkOyDcJcNYDRjcfp9itn5Isr5McwbMIrb8hQ3Fzmvo vbc7fDe1d/4nZk1WUOjrx5VEU737g+si9gPLgv8aYJv4P3Tpq65141LAwfUuoIqdZ5pyrqIK4tJFL VjdGnVDE9ErL/ttoUHalsinBIIACY311Iwr/BYRxG6sJmV3o5SaOydPrwyc0iJMaEy56FAj16LZkg VlvCr3am+5mR/g4SaSyw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oCeR1-00F8uL-EJ; Sat, 16 Jul 2022 09:50:03 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oCeQu-00F8q0-B4; Sat, 16 Jul 2022 09:49:59 +0000 X-UUID: 1eea351d56344f76a69a72d0f54d4ea3-20220716 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.8,REQID:70fd3716-9814-4a0f-8b03-85819c2b33f7,OB:0,LO B:0,IP:0,URL:5,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:0 X-CID-META: VersionHash:0f94e32,CLOUDID:e9782433-b9e4-42b8-b28a-6364427c76bb,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: 1eea351d56344f76a69a72d0f54d4ea3-20220716 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1413264754; Sat, 16 Jul 2022 02:49:49 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Sat, 16 Jul 2022 17:38:17 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Sat, 16 Jul 2022 17:38:16 +0800 From: Irui Wang To: Hans Verkuil , Mauro Carvalho Chehab , Rob Herring , Matthias Brugger , Tzung-Bi Shih , , Tiffany Lin , Andrew-CT Chen CC: Yong Wu , Maoguang Meng , Longfei Wang , Yunfei Dong , Irui Wang , , , , , , , Subject: [PATCH 5/5] media: mediatek: vcodec: Fix encoder multi-instance deadlock Date: Sat, 16 Jul 2022 17:38:08 +0800 Message-ID: <20220716093808.29894-6-irui.wang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220716093808.29894-1-irui.wang@mediatek.com> References: <20220716093808.29894-1-irui.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220716_024956_426739_29EA1243 X-CRM114-Status: GOOD ( 15.20 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The vb2_queue lock can be set by encoder context, the deadlock may occur when running multi-instance encoding if use device mutex lock. Signed-off-by: Irui Wang --- drivers/media/platform/mediatek/vcodec/mtk_vcodec_drv.h | 3 +++ drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c | 6 +++--- drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c | 1 + 3 files changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_drv.h index ab80e1b1979e..25fe539e6db5 100644 --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_drv.h +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_drv.h @@ -324,6 +324,9 @@ struct mtk_vcodec_ctx { int hw_id; struct vdec_msg_queue msg_queue; + + /*q_mutex: vb2_queue mutex*/ + struct mutex q_mutex; }; /* diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c index c310bb1dbbcf..63e7fe958406 100644 --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c @@ -1300,7 +1300,7 @@ void mtk_vcodec_enc_set_default_params(struct mtk_vcodec_ctx *ctx) { struct mtk_q_data *q_data; - ctx->m2m_ctx->q_lock = &ctx->dev->dev_mutex; + ctx->m2m_ctx->q_lock = &ctx->q_mutex; ctx->fh.m2m_ctx = ctx->m2m_ctx; ctx->fh.ctrl_handler = &ctx->ctrl_hdl; INIT_WORK(&ctx->encode_work, mtk_venc_worker); @@ -1435,7 +1435,7 @@ int mtk_vcodec_enc_queue_init(void *priv, struct vb2_queue *src_vq, src_vq->ops = &mtk_venc_vb2_ops; src_vq->mem_ops = &vb2_dma_contig_memops; src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; - src_vq->lock = &ctx->dev->dev_mutex; + src_vq->lock = &ctx->q_mutex; src_vq->dev = &ctx->dev->plat_dev->dev; ret = vb2_queue_init(src_vq); @@ -1449,7 +1449,7 @@ int mtk_vcodec_enc_queue_init(void *priv, struct vb2_queue *src_vq, dst_vq->ops = &mtk_venc_vb2_ops; dst_vq->mem_ops = &vb2_dma_contig_memops; dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; - dst_vq->lock = &ctx->dev->dev_mutex; + dst_vq->lock = &ctx->q_mutex; dst_vq->dev = &ctx->dev->plat_dev->dev; return vb2_queue_init(dst_vq); diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c index 6b0688b4872d..782563e636e4 100644 --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc_drv.c @@ -130,6 +130,7 @@ static int fops_vcodec_open(struct file *file) INIT_LIST_HEAD(&ctx->list); ctx->dev = dev; init_waitqueue_head(&ctx->queue[0]); + mutex_init(&ctx->q_mutex); ctx->type = MTK_INST_ENCODER; ret = mtk_vcodec_enc_ctrls_setup(ctx);