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-rw-r--r--arch/alpha/kernel/irq_i8259.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/alpha/kernel/irq_i8259.c b/arch/alpha/kernel/irq_i8259.c
index 39299fb..9e49395 100644
--- a/arch/alpha/kernel/irq_i8259.c
+++ b/arch/alpha/kernel/irq_i8259.c
@@ -79,7 +79,8 @@ i8259a_startup_irq(unsigned int irq)
void
i8259a_end_irq(unsigned int irq)
{
- if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
+ struct irq_desc *desc = irq_to_desc(irq);
+ if (desc || !(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
i8259a_enable_irq(irq);
}