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From: Yunfei Dong <yunfei.dong@mediatek.com>
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	<angelogioacchino.delregno@collabora.com>, Benjamin Gaignard
	<benjamin.gaignard@collabora.com>, Nathan Hebert <nhebert@chromium.org>,
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CC: Hsin-Yi Wang <hsinyi@chromium.org>, Fritz Koenig <frkoenig@chromium.org>,
	Daniel Vetter <daniel@ffwll.ch>, Steve Cho <stevecho@chromium.org>, "Yunfei
 Dong" <yunfei.dong@mediatek.com>, <linux-media@vger.kernel.org>,
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	<linux-arm-kernel@lists.infradead.org>, <linux-mediatek@lists.infradead.org>,
	<Project_Global_Chrome_Upstream_Group@mediatek.com>
Subject: [PATCH v2,3/4] media: mediatek: vcodec: flush decoder before remove all source buffer
Date: Thu, 14 Mar 2024 19:44:51 +0800
Message-ID: <20240314114452.17532-4-yunfei.dong@mediatek.com>
In-Reply-To: <20240314114452.17532-1-yunfei.dong@mediatek.com>
References: <20240314114452.17532-1-yunfei.dong@mediatek.com>
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Flush decoder will reset all driver to init status, lat and core work
queue will stop to work. If lat or core work queue in working when
remove all source buffer, will lead to remove source buffer again
or buff done with one non-existent source buffer.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
 .../mediatek/vcodec/decoder/mtk_vcodec_dec.c  | 22 +++++++++----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
index 3766e2176899..cdd36a5320cd 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec.c
@@ -835,17 +835,6 @@ void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
 			  ctx->id, q->type, ctx->state, ctx->decoded_frame_cnt);
 
 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
-		while ((src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx))) {
-			if (src_buf != &ctx->empty_flush_buf.vb) {
-				struct media_request *req =
-					src_buf->vb2_buf.req_obj.req;
-
-				if (req)
-					v4l2_ctrl_request_complete(req, &ctx->ctrl_hdl);
-				v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
-			}
-		}
-
 		if (ctx->state >= MTK_STATE_HEADER) {
 			/* Until STREAMOFF is called on the CAPTURE queue
 			 * (acknowledging the event), the driver operates
@@ -868,6 +857,17 @@ void vb2ops_vdec_stop_streaming(struct vb2_queue *q)
 				mtk_v4l2_vdec_err(ctx, "DecodeFinal failed, ret=%d", ret);
 		}
 
+		while ((src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx))) {
+			if (src_buf != &ctx->empty_flush_buf.vb) {
+				struct media_request *req =
+					src_buf->vb2_buf.req_obj.req;
+
+				if (req)
+					v4l2_ctrl_request_complete(req, &ctx->ctrl_hdl);
+				v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+			}
+		}
+
 		ctx->state = MTK_STATE_FLUSH;
 		return;
 	}
-- 
2.18.0