Patch "media: mediatek: vcodec: change lat thread decode error condition" has been added to the 6.2-stable tree

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This is a note to let you know that I've just added the patch titled

    media: mediatek: vcodec: change lat thread decode error condition

to the 6.2-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     media-mediatek-vcodec-change-lat-thread-decode-error.patch
and it can be found in the queue-6.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 6109b3119cc69c5e4501c16eeebb950b4cfe0548
Author: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
Date:   Wed Feb 1 07:33:16 2023 +0000

    media: mediatek: vcodec: change lat thread decode error condition
    
    [ 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@xxxxxxxxxxxx>
    Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
    Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

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) {



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