Re: [PATCH v2] drm/bridge: sii902x: validate I2S data lane values

[Luca Ceresoli]

On Sun Sep 20, 2026 at 5:48 AM CEST, Pengpeng Hou wrote:
> The sil,i2s-data-lanes property reader bounds the number of entries, but
> does not bound each entry's value. Those values index the four-entry
> i2s_lane_id table when the audio FIFO sequence is built.
>
> Reject unsupported lane values before indexing that table. Report the
> property name and invalid value with dev_err_probe() so the diagnostic
> identifies the faulty configuration.
>
> The issue was found by our static-analysis tool.
>
> Fixes: ff5781634c41 ("drm/bridge: sii902x: Implement HDMI audio support")
> Assisted-by: gpt 5
> Signed-off-by: Pengpeng Hou <hppiscas@xxxxxxx>

Reviewed-by: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx>

--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com