Re: [PATCH v4 0/2] add support for GPIO based counter

[Marc Kleine-Budde]

On 1/27/21 7:44 AM, Oleksij Rempel wrote:
>>> changes v3:
>>> - convert counter to atomic_t
>>
>> What's the guaranteed width of atomic_t? IIRC a long time ago it was 24 bit only....
> 
> 32 bits. The counter is wrapped after 4294967295

Note: This is only true for >= v2.6.3 :D

https://lwn.net/Articles/71732/

Feeling old,
Marc

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