Re: Continuous Interrupt Problem

[Sarbojit Ganguly <unixman.linuxboy@xxxxxxxxx>]

To my understanding "IRQF_TRIGGER_LOW" is a flag which will trigger
the interrupt when the line is _low_.
Now, since you are not touching, the line remains low and satifies the
condition. Hence the interrupt is triggered by the core.

Can you change it to IRQF_TRIGGER_HIGH and recheck. Please consult the
hardware documentation too.



On 14 June 2012 10:43, anish singh <anish198519851985@xxxxxxxxx> wrote:
> On Thu, Jun 14, 2012 at 10:34 AM, siddharth saxena
> <siddharthsaxena1989@xxxxxxxxx> wrote:
>> Hi all
>>
>> I need help with an issue.
>> I have written a touch driver for a device and used the flag
>> IRQF_TRIGGER_LOW to request irq.
>> Now, when I boot the device, the touch interrupts are coming already without
>> touching the screen.
>> Continuous interrupts are occurring without any touch.
> try disabling the interrupt after you do request_irq and once you are
> ready to handle
> interrupts you can enable it.
>>
>>
>>
>> --
>> Regards
>> Siddharth Saxena
>>
>>
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-- 
Regards,
Sarbojit

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