[PATCH 0/4] media: verisilicon: Keep the CAPTURE format in line with the decoder

[Arun Iyengar via B4 Relay <devnull+aiyengar1990.gmail.com@kernel.org>]

Pre-existing bugs where the decoder writes more than the CAPTURE format
or an auxiliary buffer provides: the VP8 segment map when the format
grows while streaming (1), the AV1 motion vector area after film grain
is turned off (2), and an 8-bit CAPTURE format for a 10-bit stream
(3, 4). Found by Sashiko on my hantro-dec-size-check v1 [1].

Tested on an Orange Pi 5 (RK3588S) with a v7.3-based kernel, on the AV1
decoder: after film grain is turned off, the CAPTURE format is the same
as a fresh one (stock: 3133440 instead of 3525632 bytes); an 8-bit
CAPTURE format set for a 10-bit sequence is replaced by the 10-bit one,
and the 10-bit format comes back after the sequence is set again (stock:
8-bit in both cases). VP8 and AV1 fluster: no new failures; no splats.
HEVC and VP9 (G2) are not tested: the RK3588 has no G2 core, so AV1 is
the only 10-bit path here.
Patch 1 is not reproduced: the test kernel limits RK3588 VP8 to
1920x1088, and frames up to that size fit the single page the map gets.

Benjamin Gaignard's "[PATCH v1 5/7] media: verisilicon: vp8: Use
alloc/free helpers for auxiliary buffers" (2026-09-16) has the lines
patch 1 changes as context: a trivial conflict for whichever lands
second.

Developed with Claude (Anthropic), which wrote the code and the commit
messages. I reviewed every change.

[1] https://lore.kernel.org/r/20261112-hantro-dec-size-check-v1-1-e5f1180b625f@gmail.com

Signed-off-by: Arun Iyengar <aiyengar1990@gmail.com>
---
Arun Iyengar (4):
      media: verisilicon: Size the VP8 segment map for the largest frame
      media: verisilicon: Set need_postproc before resetting the CAPTURE format
      media: verisilicon: Keep the CAPTURE format at the stream's bit depth
      media: verisilicon: Set the bit depth again when its control is rewritten

 drivers/media/platform/verisilicon/hantro_drv.c  | 14 ++++++++++++--
 drivers/media/platform/verisilicon/hantro_v4l2.c | 20 +++++++++++++++++---
 drivers/media/platform/verisilicon/hantro_vp8.c  |  6 +++---
 3 files changed, 32 insertions(+), 8 deletions(-)
---
base-commit: ad6549a46748d00818483b535e5cd2a704685c98
change-id: 20261113-hantro-fixes-aace04d5268b

Best regards,
--  
Arun Iyengar <aiyengar1990@gmail.com>