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
diff -r 6b0915754563 arch/powerpc/sysdev/xilinx_intc.c
--- a/arch/powerpc/sysd
On Tue, 2008-07-29 at 15:14 +0100, David Howells wrote:
> Sergey Temerkhanov <[EMAIL PROTECTED]> wrote:
>
> > And handle_level_irq() which is currently used as high-level IRQ handler for
> > Xilinx INTC only tries to acknowledge IRQ before ISR call. So that the IRQ
> > remains asserted in INTC and
Sergey Temerkhanov <[EMAIL PROTECTED]> wrote:
> And handle_level_irq() which is currently used as high-level IRQ handler for
> Xilinx INTC only tries to acknowledge IRQ before ISR call. So that the IRQ
> remains asserted in INTC and after the call to desc->chip->unmask() causes
> spurious attempt
