releases/6.2.15/media-mediatek-vcodec-change-lat-thread-decode-error.patch

From 6109b3119cc69c5e4501c16eeebb950b4cfe0548 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Wed, 1 Feb 2023 07:33:16 +0000
Subject: media: mediatek: vcodec: change lat thread decode error condition

From: Yunfei Dong <yunfei.dong@mediatek.com>

[ Upstream commit 960badda95f10fb0c60f6f64978b19eafa9507a7 ]

If lat thread can't get lat buffer, it should be that current instance
don't be schedulded, the driver can't free the src buffer directly.

Fixes: 7b182b8d9c85 ("media: mediatek: vcodec: Refactor get and put capture buffer flow")
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c     | 6 ++++--
 .../platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c  | 2 +-
 .../platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c     | 2 +-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c
index ab8f642d1e5b0..3000db975e5f5 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c
@@ -258,8 +258,10 @@ static void mtk_vdec_worker(struct work_struct *work)
 		if (src_buf_req)
 			v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
 	} else {
-		v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
-		v4l2_m2m_buf_done(vb2_v4l2_src, state);
+		if (ret != -EAGAIN) {
+			v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+			v4l2_m2m_buf_done(vb2_v4l2_src, state);
+		}
 		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
 	}
 }
diff --git a/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
index 955b2d0c8f53f..999ce7ee5fdc2 100644
--- a/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
+++ b/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
@@ -597,7 +597,7 @@ static int vdec_h264_slice_lat_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
 	lat_buf = vdec_msg_queue_dqbuf(&inst->ctx->msg_queue.lat_ctx);
 	if (!lat_buf) {
 		mtk_vcodec_err(inst, "failed to get lat buffer");
-		return -EINVAL;
+		return -EAGAIN;
 	}
 	share_info = lat_buf->private_data;
 	src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
diff --git a/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c
index cbb6728b8a40b..cf16cf2807f07 100644
--- a/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c
+++ b/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_req_lat_if.c
@@ -2070,7 +2070,7 @@ static int vdec_vp9_slice_lat_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
 	lat_buf = vdec_msg_queue_dqbuf(&instance->ctx->msg_queue.lat_ctx);
 	if (!lat_buf) {
 		mtk_vcodec_err(instance, "Failed to get VP9 lat buf\n");
-		return -EBUSY;
+		return -EAGAIN;
 	}
 	pfc = (struct vdec_vp9_slice_pfc *)lat_buf->private_data;
 	if (!pfc) {
-- 
2.39.2