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: 591227 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9F71CCA479 for ; Sat, 16 Jul 2022 09:38:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232242AbiGPJiZ (ORCPT ); Sat, 16 Jul 2022 05:38:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33824 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232023AbiGPJiY (ORCPT ); Sat, 16 Jul 2022 05:38:24 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C3BDE2B1B5; Sat, 16 Jul 2022 02:38:22 -0700 (PDT) X-UUID: 0e249f29ffdf47f5ba60e6ac2fc003e4-20220716 X-CID-UNFAMILIAR: 1 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.8, REQID:5870c23f-a4f2-45f8-a0c3-d0cf757498bc, OB:0, LO B:0,IP:0,URL:5,TC:0,Content:-5,EDM:0,RT:0,SF:100,FILE:0,RULE:Release_Ham,A CTION:release,TS:100 X-CID-INFO: VERSION:1.1.8, REQID:5870c23f-a4f2-45f8-a0c3-d0cf757498bc, OB:0, LOB: 0,IP:0,URL:5,TC:0,Content:-5,EDM:0,RT:0,SF:100,FILE:0,RULE:Spam_GS981B3D,A CTION:quarantine,TS:100 X-CID-META: VersionHash:0f94e32, CLOUDID:c8947464-0b3f-4b2c-b3a6-ed5c044366a0, C OID:409a75ef775f,Recheck:0,SF:28|16|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:1,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: 0e249f29ffdf47f5ba60e6ac2fc003e4-20220716 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 927492231; Sat, 16 Jul 2022 17:38:19 +0800 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 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.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);