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-rw-r--r--arch/mips/mti-malta/malta-int.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index cb675ec6f283..54f56d5a96c4 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -232,6 +232,17 @@ void __init arch_init_irq(void)
{
int corehi_irq;
+ /*
+ * Preallocate the i8259's expected virq's here. Since irqchip_init()
+ * will probe the irqchips in hierarchial order, i8259 is probed last.
+ * If anything allocates a virq before the i8259 is probed, it will
+ * be given one of the i8259's expected range and consequently setup
+ * of the i8259 will fail.
+ */
+ WARN(irq_alloc_descs(I8259A_IRQ_BASE, I8259A_IRQ_BASE,
+ 16, numa_node_id()) < 0,
+ "Cannot reserve i8259 virqs at IRQ%d\n", I8259A_IRQ_BASE);
+
i8259_set_poll(mips_pcibios_iack);
irqchip_init();