From a35369d1f67dc9189a1144ba8abca1be303d13f5 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Tue, 24 Oct 2006 13:37:34 +1000
Subject: [PATCH] --- yaml --- r: 42171 b: refs/heads/master c:
 5414c6be57dd02e089c3eba1f5134f441733d013 h: refs/heads/master i:   42169:
 261a981387a58dba33ce092ec1c821d1c3ac44c0   42167:
 591a0bc90aeb1d13431b3316bfd450d242413614 v: v3

---
 [refs]                          | 2 +-
 trunk/arch/powerpc/kernel/irq.c | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 9404c32553c6..579d0ab50e93 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a0f467261ae041864414103b8dd6fc4487a3c7de
+refs/heads/master: 5414c6be57dd02e089c3eba1f5134f441733d013
diff --git a/trunk/arch/powerpc/kernel/irq.c b/trunk/arch/powerpc/kernel/irq.c
index 67b21a008f6e..eb9fc621e057 100644
--- a/trunk/arch/powerpc/kernel/irq.c
+++ b/trunk/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;