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

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commit 9be85491619f1953b8a29590ca630be571941ffa upstream.

Fix a smatch static checker warning on vdec_h264_req_multi_if.c.
Which leads to a kernel crash when fb is NULL.

Fixes: 397edc703a ("media: mediatek: vcodec: add h264 decoder driver for mt8186")
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>
[ drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
  is renamed from drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
  since 0934d37596 ("media: mediatek: vcodec: separate decoder and encoder").
  The path is changed accordingly to apply the patch on 6.1.y. ]
Signed-off-by: Wenshan Lan <jetlan9@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yunfei Dong
2024-06-13 17:33:55 +08:00
committed by Greg Kroah-Hartman
parent ada4ca5fd5
commit d48890ef87
1 changed files with 7 additions and 2 deletions
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9
drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
View File

@@ -729,11 +729,16 @@ static int vdec_h264_slice_single_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_vcodec_err(inst, "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_vcodec_debug(inst, "[h264-dec] [%d] y_dma=%llx c_dma=%llx",
inst->ctx->decoded_frame_cnt, y_fb_dma, c_fb_dma);