Re: To Check if interrupt is lowered

["Wang Yu" <wangyuict@xxxxxxxxx>]

Om....what do you mean of "ISR lowered the interrupt"?

On Mon, Dec 15, 2008 at 8:58 AM, Asim <linkasim@xxxxxxxxx> wrote:

Thanks Greg for your reply.

I just want to know if the ISR lowered the interrupt atleast once
after entering the ISR. I want to find this out without reading the
device's register. I realize the problem that there still may be a
pending interrupt when I do this check which can cause some problems.

I have a custom device which does not respond properly, if there is an
interface for this it would help me grately since I have no control to
change the device.

Regards,
Asim

On 12/13/08, Greg KH <greg@xxxxxxxxx> wrote:
> On Sat, Dec 13, 2008 at 11:29:05AM -0600, Asim wrote:
>> Hi,
>>
>> Is there any kernel routine to check if there are no pending
>> interrupts, give an IRQ number ?
>
> Nope, because who is to say an interrupt doesn't happen right after the
> function returns?  :)
>
> What are you trying to do?  Just register an interrupt handler properly
> and you should be fine, don't try to test for anything yourself.
>
> thanks,
>
> greg k-h
>

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National Research Center for Intelligent Computing Systems
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