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media: mediatek: vcodec: Fix H264 stateless decoder smatch warning

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[ Upstream commit 7878d3a385 ]

Fix a smatch static checker warning on vdec_h264_req_if.c.
Which leads to a kernel crash when fb is NULL.

Fixes: 06fa5f757d ("media: mtk-vcodec: vdec: support stateless H.264 decoding")
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yunfei Dong 2024-06-13 17:33:57 +08:00 committed by Greg Kroah-Hartman
parent dbe5b73738
commit c6b9f971b4
1 changed files with 7 additions and 2 deletions
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9
drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c
View File

@ -347,11 +347,16 @@ static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
return vpu_dec_reset(vpu);
fb = inst->ctx->dev->vdec_pdata->get_cap_buffer(inst->ctx);
if (!fb) {
mtk_vdec_err(inst->ctx, "fb buffer is NULL");
return -ENOMEM;
}
src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
dst_buf_info = container_of(fb, struct mtk_video_dec_buf, frame_buffer);
y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
y_fb_dma = fb->base_y.dma_addr;
c_fb_dma = fb->base_c.dma_addr;
mtk_vdec_debug(inst->ctx, "+ [%d] FB y_dma=%llx c_dma=%llx va=%p",
inst->num_nalu, y_fb_dma, c_fb_dma, fb);