net: Rework netdev_drivername() to avoid warning.
This interface uses a temporary buffer, but for no real reason.
And now can generate warnings like:
net/sched/sch_generic.c: In function dev_watchdog
net/sched/sch_generic.c:254:10: warning: unused variable drivername
Just return driver->name directly or "".
Reported-by: Connor Hansen <cmdkhh@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ca333e7..54b8b4d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2555,7 +2555,7 @@
extern struct kobj_ns_type_operations net_ns_type_operations;
-extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len);
+extern const char *netdev_drivername(const struct net_device *dev);
extern void linkwatch_run_queue(void);