dev: only calculate wireless bitrate if necessary

Only call wireless_bitrate (and thus the underlying ioctl) if strictly
necessary, i.e. ethtool_bitrate returned 0.

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

1 files changed, 4 insertions, 5 deletions

diff --git a/dev.c b/dev.c
index 82d97d2..2ced495 100644
--- a/dev.c
+++ b/dev.c
@@ -217,14 +217,13 @@ int device_up_and_running(const char *ifname)
 		(IFF_UP | IFF_RUNNING);
 }
 
-u32 device_bitrate(const char *ifname)
+uint32_t device_bitrate(const char *ifname)
 {
-	u32 scopper, swireless;
+	uint32_t scopper;
 
-	scopper   = ethtool_bitrate(ifname);
-	swireless = wireless_bitrate(ifname);
+	scopper = ethtool_bitrate(ifname);
 
-	return scopper ? : swireless;
+	return scopper ? : wireless_bitrate(ifname);
 }
 
 short device_enter_promiscuous_mode(const char *ifname)