[PATCH]irq:manage.c Fix warning: variable 'old_name' set but not used

["Justin P. Mattock" <justinmattock@gmail.com>]

Not sure if this is the right approach with this.. The below
fixes a warning message generated by GCC
  CC      kernel/irq/manage.o
kernel/irq/manage.c: In function '__setup_irq':
kernel/irq/manage.c:652:14: warning: variable 'old_name' set but not used

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 kernel/irq/manage.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index e149748..99d2f39 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -733,6 +733,9 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 		if (!((old->flags & new->flags) & IRQF_SHARED) ||
 		    ((old->flags ^ new->flags) & IRQF_TRIGGER_MASK)) {
 			old_name = old->name;
+			if(old_name) {
+				printk(KERN_ERR "IRQ mismatch: %d %s\n", IRQF_SHARED, old_name);
+			}	
 			goto mismatch;
 		}
 
-- 
1.7.1.rc1.21.gf3bd6