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[ARM] 4589/1: ns9xxx: acknowledge IRQ_EXT2 in the demux routine for FPGA irqs

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The FPGA on the a9m9750dev board interrupts the CPU via EXT2. So
to acknowledge any FPGA interrupt IRQ_EXT2 must be acknowledged.

Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Uwe Kleine-König 2007-09-30 20:34:41 +01:00 committed by Russell King
parent ff9e76aaba
commit ba7d850a02
1 changed files with 7 additions and 2 deletions
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9
arch/arm/mach-ns9xxx/board-a9m9750dev.c
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@ -70,15 +70,20 @@ static void a9m9750dev_fpga_demux_handler(unsigned int irq,
{
int stat = FPGA_ISR;
desc->chip->mask_ack(irq);
while (stat != 0) {
int irqno = fls(stat) - 1;
struct irq_desc *fpgadesc;
stat &= ~(1 << irqno);
desc = irq_desc + FPGA_IRQ(irqno);
fpgadesc = irq_desc + FPGA_IRQ(irqno);
desc_handle_irq(FPGA_IRQ(irqno), desc);
desc_handle_irq(FPGA_IRQ(irqno), fpgadesc);
}
desc->chip->unmask(irq);
}
void __init board_a9m9750dev_init_irq(void)