fix irq issue (ap70 eth1)

SVN-Revision: 5288

target/linux/aruba-2.6/patches/002-irq.patch

@@ -1,7 +1,7 @@
 diff -Nur linux-2.6.17/arch/mips/aruba/irq.c linux-2.6.17-openwrt/arch/mips/aruba/irq.c
 --- linux-2.6.17/arch/mips/aruba/irq.c	1970-01-01 01:00:00.000000000 +0100
 +++ linux-2.6.17-openwrt/arch/mips/aruba/irq.c	2006-10-12 14:32:40.026285000 -0700
-@@ -0,0 +1,282 @@
+@@ -0,0 +1,285 @@
 +#include <linux/errno.h>
 +#include <linux/init.h>
 +#include <linux/kernel_stat.h>
@@ -93,6 +93,9 @@ diff -Nur linux-2.6.17/arch/mips/aruba/irq.c linux-2.6.17-openwrt/arch/mips/arub
 +		int ip = irq - GROUP0_IRQ_BASE;
 +		switch (mips_machtype) {
 +			case MACH_ARUBA_AP70:
++				if (irq >= GROUP4_IRQ_BASE)
++					idt_gpio->gpioistat &= ~(1 << (irq - GROUP4_IRQ_BASE));
++
 +				// irqs are in groups of 32
 +				// ip is set to the remainder
 +				group = ip >> 5;