linux-kernel - [PATCH v4 7/7] media: mediatek: vcodec: remove media request checking

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Message-ID: <20240807082444.21280-8-yunfei.dong@mediatek.com>
Date: Wed, 7 Aug 2024 16:24:37 +0800
From: Yunfei Dong <yunfei.dong@...iatek.com>
To: Nícolas F . R . A . Prado
	<nfraprado@...labora.com>, Sebastian Fricke <sebastian.fricke@...labora.com>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>, Hans Verkuil
	<hverkuil-cisco@...all.nl>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Benjamin Gaignard
	<benjamin.gaignard@...labora.com>, Nathan Hebert <nhebert@...omium.org>,
	Daniel Almeida <daniel.almeida@...labora.com>
CC: Hsin-Yi Wang <hsinyi@...omium.org>, Fritz Koenig <frkoenig@...omium.org>,
	Daniel Vetter <daniel@...ll.ch>, Steve Cho <stevecho@...omium.org>, Yunfei
 Dong <yunfei.dong@...iatek.com>, <linux-media@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>,
	<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v4 7/7] media: mediatek: vcodec: remove media request checking

Need to set the buffer status to error if the media request of
each source buffer is NULL, then schedule the work to process
again in case of access NULL pointer.

Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
---
 .../vcodec/decoder/mtk_vcodec_dec_stateless.c      | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
index 3dba3549000a..43af18df03ea 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
@@ -359,10 +359,14 @@ static void mtk_vdec_worker(struct work_struct *work)
 			  ctx->id, bs_src->va, &bs_src->dma_addr, bs_src->size, vb2_src);
 	/* Apply request controls. */
 	src_buf_req = vb2_src->req_obj.req;
-	if (src_buf_req)
+	if (src_buf_req) {
 		v4l2_ctrl_request_setup(src_buf_req, &ctx->ctrl_hdl);
-	else
+	} else {
 		mtk_v4l2_vdec_err(ctx, "vb2 buffer media request is NULL");
+		v4l2_m2m_buf_done(vb2_v4l2_src, VB2_BUF_STATE_ERROR);
+		v4l2_m2m_job_finish(dev->m2m_dev_dec, ctx->m2m_ctx);
+		return;
+	}
 
 	ret = vdec_if_decode(ctx, bs_src, NULL, &res_chg);
 	if (ret && ret != -EAGAIN) {
@@ -380,8 +384,7 @@ static void mtk_vdec_worker(struct work_struct *work)
 	state = ret ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE;
 	if (!IS_VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch) ||
 	    ctx->current_codec == V4L2_PIX_FMT_VP8_FRAME) {
-		if (src_buf_req)
-			v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
+		v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
 		vb2_v4l2_dst = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
 		v4l2_m2m_buf_done(vb2_v4l2_dst, state);
 		v4l2_m2m_buf_done(vb2_v4l2_src, state);
@@ -398,8 +401,7 @@ static void mtk_vdec_worker(struct work_struct *work)
 	 */
 	ctx->last_vb2_v4l2_src = (ret != -EAGAIN) ? NULL : vb2_v4l2_src;
 	if (ret && ret != -EAGAIN) {
-		if (src_buf_req)
-			v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
+		v4l2_ctrl_request_complete(src_buf_req, &ctx->ctrl_hdl);
 		v4l2_m2m_buf_done(vb2_v4l2_src, state);
 	}
 
-- 
2.46.0