[v2,0/3] media: mediatek: vcodec: fix vcodec smatch warning

Message

Yunfei Dong June 13, 2024, 9:33 a.m. UTC

Fix below smatch static checker warning from [bug report]:

The patch 397edc703a10: "media: mediatek: vcodec: add h264 decoder
driver for mt8186" from May 12, 2022 (linux-next), leads to the
following (in development) Smatch static checker warning:

drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c:351
vdec_h264_slice_decode() potential NULL container_of 'fb'

drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp8_req_if.c:337
vdec_vp8_slice_decode() potential NULL container_of 'fb'

drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c:728
vdec_h264_slice_single_decode() potential NULL container_of 'fb'

---
Changed with v1:
- Change the return value from -EBUSY to -ENOMEM when the driver can't get
  frame buffer.
---
Yunfei Dong (3):
  media: mediatek: vcodec: fix h264 multi statless decoder smatch
    warning
  media: mediatek: vcodec: fix vp8 stateless decoder smatch warning
  media: mediatek: vcodec: fix h264 stateless decoder smatch warning

 .../mediatek/vcodec/decoder/vdec/vdec_h264_req_if.c    |  9 +++++++--
 .../vcodec/decoder/vdec/vdec_h264_req_multi_if.c       |  9 +++++++--
 .../mediatek/vcodec/decoder/vdec/vdec_vp8_req_if.c     | 10 +++++++---
 3 files changed, 21 insertions(+), 7 deletions(-)