dev: Constify `ifname' parameter to device_up_and_running()

The parameter `ifname' to device_up_and_running() is never modified
inside the function, thus mark it as const.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 1 insertions, 1 deletions

diff --git a/dev.c b/dev.c
index 3fafbde..5bbac71 100644
--- a/dev.c
+++ b/dev.c
@@ -167,7 +167,7 @@ void device_set_flags(const char *ifname, const short flags)
 	close(sock);
 }
 
-int device_up_and_running(char *ifname)
+int device_up_and_running(const char *ifname)
 {
 	if (!ifname)
 		return -EINVAL;