[PATCH] rt2x00: get_duration expects values in 100kbs

get_duration expects all speeds to be passed in 100kbs,
this means that passing 2 is incorrect and should be raised to 20

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index fa8669f..c8c6a84 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -277,7 +277,7 @@
 	 */
 	rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
 	rt2x00_set_field32(&reg, BCNCSR1_PRELOAD,
-			   PREAMBLE + get_duration(IEEE80211_HEADER, 2));
+			   PREAMBLE + get_duration(IEEE80211_HEADER, 20));
 	rt2x00_set_field32(&reg, BCNCSR1_BEACON_CWMIN,
 			   rt2x00lib_get_ring(rt2x00dev,
 					      IEEE80211_TX_QUEUE_BEACON)