Author: sam
Date: Mon Jun 22 20:57:51 2009
New Revision: 194656
URL: http://svn.freebsd.org/changeset/base/194656
Log:
hook arm_post_filter to ACK GPIO interrupts; this fixes the interrupt
storm observed on the GPS+RS485 uarts on Gateworks Cambria boards
Reviewed by: cognet
Modified:
head/sys/arm/xscale/ixp425/ixp425.c
Modified: head/sys/arm/xscale/ixp425/ixp425.c
==============================================================================
--- head/sys/arm/xscale/ixp425/ixp425.c Mon Jun 22 20:42:28 2009
(r194655)
+++ head/sys/arm/xscale/ixp425/ixp425.c Mon Jun 22 20:57:51 2009
(r194656)
@@ -186,6 +186,13 @@ ixp425_gpio_ack(int irq)
ixp425_irq2gpio_bit(irq);
}
+static void
+ixp425_post_filter(void *arg)
+{
+ uintptr_t irq = (uintptr_t) arg;
+ ixp425_gpio_ack(irq);
+}
+
void
arm_mask_irq(uintptr_t nb)
{
@@ -304,6 +311,7 @@ ixp425_attach(device_t dev)
ixp435_set_intrmask();
ixp435_set_intrsteer();
}
+ arm_post_filter = ixp425_post_filter;
if (bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
BUS_SPACE_MAXADDR, NULL, NULL, 0xffffffff, 0xff, 0xffffffff, 0,
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