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authorMichael Ellerman <michael@ellerman.id.au>2006-10-24 13:37:34 +1000
committerPaul Mackerras <paulus@samba.org>2006-10-25 14:20:20 +1000
commit5414c6be57dd02e089c3eba1f5134f441733d013 (patch)
treecba51e6f4cb80eade6ad107b757ce38d95c249a0 /arch/powerpc/kernel/irq.c
parenta0f467261ae041864414103b8dd6fc4487a3c7de (diff)
[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>
Diffstat (limited to 'arch/powerpc/kernel/irq.c')
-rw-r--r--arch/powerpc/kernel/irq.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 67b21a008f6e..eb9fc621e057 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -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;