Re: [PATCH v2 2/4] thermal/drivers/airoha: Serialise access to the shared ADC

[Daniel Lezcano]

On 9/15/26 21:11, Vitaliy Sochnev wrote:
> A read selects the sensor and walks three diodes with a 10 ms settle on
> each. Nothing serialises this, so concurrent reads interleave and
> convert samples taken at another mux position.
>
> Mux writes are dropped silently unless PLLRG_PROTECT is lifted, and its
> save and restore do not nest. The cached TADC value also skips a write
> after another reader has moved the mux.
>
> With the AN7583 sensors read as parallel zones during CPU frequency
> changes, a zone crossed its critical trip on a chip at 55 C and the
> board shut down.
>
> Serialise the sequence, drop the cache, check the selection after
> writing and after sampling, and return -EAGAIN if it does not hold.
>
> Signed-off-by: Vitaliy Sochnev <sochnev.v.74@xxxxxxxxx>
> ---

Should this have a Fixes: tag?