On Mon, Aug 25, 2008 at 6:55 AM, Sergey Temerkhanov
[off-list ref] wrote:

This fixes the missing acknowledge at the end of handle_level_irq().

It adds a field flags to struct irq_chip. If IRQ_CHIP_UNMASK_ACK is set in
this field, acknowledge is performed before unmasking.

Can this fix be handled in the XINTC controller driver itself?  This
patch unconditionally adds what is essentially a device specific fixup
to *every* Linux platform.  I cannot see that flying very far.

g.