Re: stray interrupts on PXA270

[Rafal Boni <rafal%pobox.com@localhost>]

Chris Gilbert wrote:
> rtos wrote:
> > I get stray interrupts when I try to run a 4.99.55 kernel on two
> > different PXA270 devices. I did not have this problem with 4.0. I looked
> > at the registers and the "kernel" seems to be unmasking (in ICMR)
> > interrupts for devices that I do not have drivers for. Why doesn't the
> > kernel leave the devices masked until a driver says, hey, I need my
> > interrupt? 
> >
> > -rtos
>
> Sounds like a bug, it should default to masking everything, and only
> letting things interrupt if a driver asks for it.
>
> I don't think I'm seeing this on a zaurus (which is also based on PXA270)

I bet rtos is using the generic pxa2x0 interrupt code.. I see this same 
behavior on the XScale ipaq (pxa2x0) using the generic pxa2x0 interrupt 
code.  It's especially a PITA on that hw since I'm booting from WinCE 
with all sorts of stuff already enabled, but not enough of a PITA for me 
to tweak the code or spin off a private interrupt implementation (I've 
been meaning to do that for other reasons, but haven't gotten around to it).

--rafal