Staging: ipack: Let interrupts return irqreturn_t.

Signed-off-by: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/ipack/ipack.h b/drivers/staging/ipack/ipack.h
index 0ea9d84..9c3079d 100644
--- a/drivers/staging/ipack/ipack.h
+++ b/drivers/staging/ipack/ipack.h
@@ -11,6 +11,7 @@
 
 #include <linux/mod_devicetable.h>
 #include <linux/device.h>
+#include <linux/interrupt.h>
 
 #include "ipack_ids.h"
 
@@ -126,7 +127,8 @@
 struct ipack_bus_ops {
 	int (*map_space) (struct ipack_device *dev, unsigned int memory_size, int space);
 	int (*unmap_space) (struct ipack_device *dev, int space);
-	int (*request_irq) (struct ipack_device *dev, int vector, int (*handler)(void *), void *arg);
+	int (*request_irq) (struct ipack_device *dev, int vector,
+			    irqreturn_t (*handler)(void *), void *arg);
 	int (*free_irq) (struct ipack_device *dev);
 	int (*get_clockrate) (struct ipack_device *dev);
 	int (*set_clockrate) (struct ipack_device *dev, int mherz);