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| author | Damon Ding <damon.ding@rock-chips.com> | 2026-08-28 14:51:52 +0800 |
|---|---|---|
| committer | Luca Ceresoli <luca.ceresoli@bootlin.com> | 2026-09-09 15:36:12 +0200 |
| commit | 4ff2f941b7828042feb2971c7039c8f790a105a4 (patch) | |
| tree | 4fc4c42dbc8ac59aba25b650638fcd1672a2f15e | |
| parent | 02f569dd66c94dd67b2586f776235cf4177409ed (diff) | |
| download | linux-next-4ff2f941b7828042feb2971c7039c8f790a105a4.tar.gz linux-next-4ff2f941b7828042feb2971c7039c8f790a105a4.zip | |
drm/bridge: analogix_dp: Add validation for samsung,lane-count property
Add validity check for samsung,lane-count to ensure DT-provided
lane count values are specification-compliant.
Suggested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://patch.msgid.link/20260828065153.590802-5-damon.ding@rock-chips.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index ddb15d6de05f..a74c855936b2 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1274,7 +1274,8 @@ static int analogix_dp_dt_parse_pdata(struct analogix_dp_device *dp) return dev_err_probe(dp->dev, -EINVAL, "Failed to get samsung,link-rate\n"); video_info->max_link_rate = val; - if (of_property_read_u32(dp_node, "samsung,lane-count", &val)) + if (of_property_read_u32(dp_node, "samsung,lane-count", &val) || + !drm_dp_lane_count_is_valid(val)) return dev_err_probe(dp->dev, -EINVAL, "Failed to get samsung,lane-count\n"); video_info->max_lane_count = val; |