[PATCH] iio: xilinx-ams: Unmask interrupts after updating alarms

[Michal Simek]

On 7/24/25 17:32, Jonathan Cameron wrote:
> On Mon, 14 Jul 2025 20:28:47 -0400
> Sean Anderson <sean.anderson at linux.dev> wrote:
> 
>> To convert level-triggered alarms into edge-triggered IIO events, alarms
>> are masked when they are triggered. To ensure we catch subsequent
>> alarms, we then periodically poll to see if the alarm is still active.
>> If it isn't, we unmask it. Active but masked alarms are stored in
>> current_masked_alarm.
>>
>> If an active alarm is disabled, it will remain set in
>> current_masked_alarm until ams_unmask_worker clears it. If the alarm is
>> re-enabled before ams_unmask_worker runs, then it will never be cleared
>> from current_masked_alarm. This will prevent the alarm event from being
>> pushed even if the alarm is still active.
>>
>> Fix this by recalculating current_masked_alarm immediately when enabling
>> or disabling alarms.
>>
>> Fixes: d5c70627a794 ("iio: adc: Add Xilinx AMS driver")
>> Signed-off-by: Sean Anderson <sean.anderson at linux.dev>
>> ---
> Anand?
> 
> This seems fine to me, but I'm not that familiar with the hardware or driver.

Anand left some time ago. Salih or Conall should be able to provide some input.

Thanks,
Michal