[POWERPC] Make irq_dispose_mapping(NO_IRQ) a nop
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>
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 67b21a0..eb9fc62 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -648,10 +648,14 @@
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;