Re: [RFT/PATCH 05/10] cbus: retu: move to threaded IRQ and GENIRQ

Felipe Balbi
2011-01-07T19:15:43Z

On Fri, Jan 07, 2011 at 09:04:55AM -0800, Tony Lindgren wrote:
> * Felipe Balbi <balbi@ti.com> [110106 23:47]:
> >
> > The main point of using Sparse IRQ numbering is exactly avoiding
> > pre-processor branches. Instead of defining ranges only when a device is
> > compile, we can always keep the range allocated no matter if the device
> > probes or not. So, I suggest dropping the ifdeffery on <plat/irqs.h> and
> > move that to something like below:
>
> This is fine as long as we we don't run out of allocated IRQs before
> switching over to sparse IRQ. The original reason for the ifdeffery
> was to keep NR_IRQS below 256 when possible as it optimizes the interrupt
> handling in that case. See NR_IRQS in arch/arm/include/asm/hardirq.h
> for more info.

I've sent patches (you're in Cc) enabling SPARSE_IRQ on OMAP. I boot
tested on panda and overo and it was working fine.

--
balbi