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Mon, 21 Nov 2022 06:35:14 +0000 From: Ming Qian To: mchehab@kernel.org, hverkuil-cisco@xs4all.nl Cc: shawnguo@kernel.org, robh+dt@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, xiahong.bao@nxp.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH] media: amphion: lock and check m2m_ctx in event handler Date: Mon, 21 Nov 2022 14:34:42 +0800 Message-Id: <20221121063442.8565-1-ming.qian@nxp.com> X-Mailer: git-send-email 2.38.1 X-ClientProxiedBy: SI1PR02CA0006.apcprd02.prod.outlook.com (2603:1096:4:1f7::11) To AM6PR04MB6341.eurprd04.prod.outlook.com (2603:10a6:20b:d8::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB6341:EE_|PAXPR04MB8736:EE_ X-MS-Office365-Filtering-Correlation-Id: f69f5862-12b2-4e9b-9241-08dacb8a8beb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: Tn4vCO+TtRiltsEpF6uk858491uvDSCdbQIK/Xff5bLLyQNxacxzQDTD/r4/RB9/pprvRNNI6d96sQeBbMEwgllHGYuJ0vBDpNnyqLFuf1iNthby0/uA418C3n6wnjpidCOdVT7fqlLNdEL0wQkfDxcDr66rKcsbY4zgyYV44BLJ74Yl7WqYkGIZb0V+vk4Lpavm7xKxeM8wL8kriF7GIKmtPYVvRbMVx9jusc07nGw/nPVHIegsTQAZbnoFhaatvlYxydagZ4aBMSbOPw/3BG+ABtdaCNoJK/GRmRZjCbrGTpKxBOibzykGmAL0lvAAYDmj3ZWTz0ztW247qCb0TkHN69ZoPGmgNCR52xp5qBz9yfxtwC2BLkUIsl+JWpkygq67V778IOs33rMOGqHN7w3Ee7NPCtilInVbPZZuqdF2j2ozszMVncxV2ves2pRdUUQgaZogZW/9ERkk999pRq2hCDcnLeP/MEaI2Ouj+6tJ343liCL6ZbR9eJqhPOh5JL+DOrSBFru5VaeKSRZMyVp3lSftJsWzWvfP4wlztj7UOtX+L3Vde2vLKSsLmothrvbJ6JmmxlCP/lTB9a3FbwjcBvIyjlKmxKGdYytTxrvUElM9sjPeibGIevxHObX7Ej3NCJDFl2qCZLpLofBnuWpOSztej7ih+TDOE3aJzWJ5M/iNitMcsIXIo0nD6qHNZV1z6axmlo3na9MSoAlimg== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM6PR04MB6341.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(39860400002)(346002)(366004)(376002)(396003)(136003)(451199015)(5660300002)(44832011)(7416002)(6506007)(316002)(52116002)(66476007)(8676002)(4326008)(66946007)(36756003)(6512007)(41300700001)(2616005)(26005)(1076003)(8936002)(186003)(38350700002)(38100700002)(2906002)(83380400001)(86362001)(66556008)(6666004)(6486002)(478600001);DIR:OUT;SFP:1101; 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Fixes: 3cd084519c6f ("media: amphion: add vpu v4l2 m2m support") Signed-off-by: Ming Qian --- drivers/media/platform/amphion/vpu_msgs.c | 2 ++ drivers/media/platform/amphion/vpu_v4l2.c | 8 ++++++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/amphion/vpu_msgs.c b/drivers/media/platform/amphion/vpu_msgs.c index d8247f36d84b..92672a802b49 100644 --- a/drivers/media/platform/amphion/vpu_msgs.c +++ b/drivers/media/platform/amphion/vpu_msgs.c @@ -43,6 +43,7 @@ static void vpu_session_handle_mem_request(struct vpu_inst *inst, struct vpu_rpc req_data.ref_frame_num, req_data.act_buf_size, req_data.act_buf_num); + vpu_inst_lock(inst); call_void_vop(inst, mem_request, req_data.enc_frame_size, req_data.enc_frame_num, @@ -50,6 +51,7 @@ static void vpu_session_handle_mem_request(struct vpu_inst *inst, struct vpu_rpc req_data.ref_frame_num, req_data.act_buf_size, req_data.act_buf_num); + vpu_inst_unlock(inst); } static void vpu_session_handle_stop_done(struct vpu_inst *inst, struct vpu_rpc_event *pkt) diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c index 33aaa86d465f..6773b885597c 100644 --- a/drivers/media/platform/amphion/vpu_v4l2.c +++ b/drivers/media/platform/amphion/vpu_v4l2.c @@ -327,8 +327,12 @@ int vpu_process_capture_buffer(struct vpu_inst *inst) struct vb2_v4l2_buffer *vpu_next_src_buf(struct vpu_inst *inst) { - struct vb2_v4l2_buffer *src_buf = v4l2_m2m_next_src_buf(inst->fh.m2m_ctx); + struct vb2_v4l2_buffer *src_buf = NULL; + if (!inst->fh.m2m_ctx) + return NULL; + + src_buf = v4l2_m2m_next_src_buf(inst->fh.m2m_ctx); if (!src_buf || vpu_get_buffer_state(src_buf) == VPU_BUF_STATE_IDLE) return NULL; @@ -351,7 +355,7 @@ void vpu_skip_frame(struct vpu_inst *inst, int count) enum vb2_buffer_state state; int i = 0; - if (count <= 0) + if (count <= 0 || !inst->fh.m2m_ctx) return; while (i < count) {