[ARM] Only call set_type method in setup_irq if it's defined

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index b5645c4462cf..1d50d2b98f55 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -710,7 +710,8 @@ int setup_irq(unsigned int irq, struct irqaction *new)
                 desc->pending = 0;
                 desc->disable_depth = 1;
 
-                if (new->flags & SA_TRIGGER_MASK) {
+                if (new->flags & SA_TRIGGER_MASK &&
+                    desc->chip->set_type) {
                         unsigned int type = new->flags & SA_TRIGGER_MASK;
                         desc->chip->set_type(irq, type);
                 }