[PATCH] Re: Level IRQ handling on Xilinx INTC with ARCH=powerpc

[Sergey Temerkhanov]

I've prepared the patch to fix the problem being discussed. It adds a field 
flags to struct irq_chip. If IRQ_CHIP_UNMASK_ACK is set in this field, 
acknowledge is performed before unmasking.

The patch is against 2.6.26
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