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[POWERPC] Make irq_dispose_mapping(NO_IRQ) a nop

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It makes for a friendlier API if irq_dispose_mapping(NO_IRQ) is a
nop, rather than triggering a WARN_ON.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman 2006-10-24 13:37:34 +10:00 committed by Paul Mackerras
parent a0f467261a
commit 5414c6be57
1 changed files with 5 additions and 1 deletions
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6
arch/powerpc/kernel/irq.c
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@ -648,10 +648,14 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
void irq_dispose_mapping(unsigned int virq)
{
struct irq_host *host = irq_map[virq].host;
struct irq_host *host;
irq_hw_number_t hwirq;
unsigned long flags;
if (virq == NO_IRQ)
return;
host = irq_map[virq].host;
WARN_ON (host == NULL);
if (host == NULL)
return;