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mpc85xx: disable the i8259 irq on mpc8548cds (but leave the controller initialized) - it shares an irq with the pcie device which causes irq storms
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25037 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -0,0 +1,23 @@
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--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
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+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
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@@ -234,15 +234,16 @@ static int mpc85xx_cds_8259_attach(void)
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return -ENODEV;
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}
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+ i8259_init(cascade_node, 0);
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+ of_node_put(cascade_node);
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+
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cascade_irq = irq_of_parse_and_map(cascade_node, 0);
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if (cascade_irq == NO_IRQ) {
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- printk(KERN_ERR "Failed to map cascade interrupt\n");
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+ of_node_put(cascade_node);
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+ printk(KERN_DEBUG "No interrupt for i8259 PIC\n");
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return -ENXIO;
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}
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- i8259_init(cascade_node, 0);
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- of_node_put(cascade_node);
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-
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/*
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* Hook the interrupt to make sure desc->action is never NULL.
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* This is required to ensure that the interrupt does not get
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@ -0,0 +1,13 @@
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--- a/arch/powerpc/boot/dts/mpc8548cds.dts
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+++ b/arch/powerpc/boot/dts/mpc8548cds.dts
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@@ -492,8 +492,10 @@
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#address-cells = <0>;
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#interrupt-cells = <2>;
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compatible = "chrp,iic";
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+/*
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interrupts = <0 1>;
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interrupt-parent = <&mpic>;
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+*/
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};
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rtc@70 {
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