Re: [PATCH] Input: zinitix: iterate contact slots by finger count

[timon <timon37@lavabit.com>]

Sorry for not replying earlier (life), but I don't think the v2 patch 
will fully work correctly.

At least on my samsung a3 the loop needs to work as it did before 
e941dc13fd37.

Meaning: iterate over all slots and check the (sub_status & 
SUB_BIT_EXIST) for whether the finger is active or not.
Because: the active fingers can be in later slots with the earlier slots 
being inactive.

For example when the user:
1. touches with one finger (1 finger active in slot 0)
2. touches somewhere else with a second finger (2 fingers active in 
slots 0, 1)
3. lets go with the first finger (1 finger active in slot 1)

In such a case the loop would only iterate over slot 0 and not report 
any fingers despite slot 1 still being active.
In practice this will likely be usable... but afaik and can tell it's 
still incorrect behaviour.

Best Regards,
Timon

On 7/5/26 13:17, Thành Nguyễn wrote:
> Hi Nikita, Linus, and Dmitry,
>
> Thank you all for the feedback and for confirming the fix on your end, Nikita.
>
> Unfortunately, since it's been a while since I submitted the v2 patch,
> I recently had to completely wipe my development machine and no longer
> have the local environment or the original patch files to create a v3.
>
> Since the logic in v2 is sound and the only change needed is a brief
> comment explaining the dual mask/count nature of `finger_mask`, would
> one of you be willing to add that comment and apply the patch on my
> behalf? I'd really appreciate it.
>
> Thanks again for your time and help with getting this merged!
>
> Best regards,
> Thanh Nguyen