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powerpc: Make virq_debug_show() cope with sparse irq_descs 

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2009-10-13 19:44:56 +00:00 committed by Benjamin Herrenschmidt
parent 32c105c378
commit 76f1d94f3e
1 changed files with 4 additions and 1 deletions
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5
arch/powerpc/kernel/irq.c
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@ -1065,8 +1065,11 @@ static int virq_debug_show(struct seq_file *m, void *private)
seq_printf(m, "%-5s %-7s %-15s %s\n", "virq", "hwirq",
"chip name", "host name");
for (i = 1; i < NR_IRQS; i++) {
for (i = 1; i < nr_irqs; i++) {
desc = irq_to_desc(i);
if (!desc)
continue;
spin_lock_irqsave(&desc->lock, flags);
if (desc->action && desc->action->handler) {