net: dsa: mv88e6xxx: Unique g2 IRQ name

Dynamically generate a unique g2 interrupt name, based on the
device name.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx/chip.h

@@ -295,6 +295,7 @@ struct mv88e6xxx_chip {
 	int irq;
 	char irq_name[32];
 	int device_irq;
+	char device_irq_name[32];
 	int watchdog_irq;
 	char watchdog_irq_name[32];
 

drivers/net/dsa/mv88e6xxx/global2.c

@@ -1117,9 +1117,12 @@ int mv88e6xxx_g2_irq_setup(struct mv88e6xxx_chip *chip)
 		goto out;
 	}
 
+	snprintf(chip->device_irq_name, sizeof(chip->device_irq_name),
+		 "mv88e6xxx-%s-g2", dev_name(chip->dev));
+
 	err = request_threaded_irq(chip->device_irq, NULL,
 				   mv88e6xxx_g2_irq_thread_fn,
-				   IRQF_ONESHOT, "mv88e6xxx-g2", chip);
+				   IRQF_ONESHOT, chip->device_irq_name, chip);
 	if (err)
 		goto out;