lkml.org 
[lkml]   [2003]   [May]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: tg3 - irq #: nobody cared!
Andrew Morton wrote:

>>
>> Definitely not the right fix. If the hardware status struct
>> indicates no event is pending, then we return 0 since we
>> didn't "handle" the interrupt.
>
> This is about the fifth report of unhandled interrupts. Against the fifth
> driver which looks to be correct.
>
> So I'd be suspecting the scenario which Alan outlined: the IRQ handler looped
> around, scooped up the interrupt source before the APIC delivered the IRQ.
>
> I'm working on the actual detection code - it tries to filter out the false
> positives.

On thinking about it further, I don't think you will ever be able to write
such code -- whether "interrupt received but no pending work" is an error
or not is a private matter between the driver and its device. All you can
really ask the driver for is "was that interrupt generated by your device?"


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:35    [W:0.037 / U:1.768 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site