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media: rkvdec: hevc: tighten EXT SPS RPS control dimensions

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The VDPU381 HEVC driver registers V4L2_CID_STATELESS_HEVC_EXT_SPS_ST_RPS
and V4L2_CID_STATELESS_HEVC_EXT_SPS_LT_RPS with .cfg.dims = { 65 }, but
the HEVC spec caps num_short_term_ref_pic_sets at 64 (ITU-T H.265 7.4.8)
and num_long_term_ref_pics_sps at 32 (7.4.3.2.1). The hardware descriptor
table (struct rkvdec_rps) sizes match those spec limits: refs[32] and
short_term_ref_sets[64].

Reduce the dims to { 64 } and { 32 } respectively so the V4L2 control
framework rejects oversized payloads before any driver code runs.

Fixes: c9a59dc2ac ("media: rkvdec: Add HEVC support for the VDPU381 variant")
Cc: stable@vger.kernel.org
Suggested-by: Detlev Casanova <detlev.casanova@collabora.com>
Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Michael Bommarito 2026-05-27 15:47:35 -04:00 committed by Hans Verkuil
parent 2a577b0bd6
commit f0b9d7e5be
1 changed files with 2 additions and 2 deletions
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4
drivers/media/platform/rockchip/rkvdec/rkvdec.c
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@ -278,12 +278,12 @@ static const struct rkvdec_ctrl_desc vdpu38x_hevc_ctrl_descs[] = {
{
.cfg.id = V4L2_CID_STATELESS_HEVC_EXT_SPS_ST_RPS,
.cfg.ops = &rkvdec_ctrl_ops,
.cfg.dims = { 65 },
.cfg.dims = { 64 },
},
{
.cfg.id = V4L2_CID_STATELESS_HEVC_EXT_SPS_LT_RPS,
.cfg.ops = &rkvdec_ctrl_ops,
.cfg.dims = { 65 },
.cfg.dims = { 32 },
},
};