[PATCH] [RFC] Fix level IRQ handling on Xilinx INTC with ARCH=powerpc

[Sergey Temerkhanov]

On Monday 25 August 2008 18:26:54 Grant Likely wrote:
>This
> patch unconditionally adds what is essentially a device specific fixup
> to *every* Linux platform.  I cannot see that flying very far.
>

I know that. But without IRQ_CHIP_UNMASK_ACK set this fixup won'be applied so 
setups that are not affected should work as before.

This problem was already discussed before: 
http://www.nabble.com/Level-IRQ-handling-on-Xilinx-INTC-with-ARCH%3Dpowerpc-td18711173.html

Of course, I can just modify xilinx_intc_unmask() routine to perform 
acknowledge as I did before, but it seems a hack to me.