Re: [PATCH v4 0/2] add support for GPIO based counter
From: Marc Kleine-Budde
Date: Wed Jan 27 2021 - 02:16:59 EST
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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