[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>

drivers/net/wireless/rt2x00/rt2400pci.c

@@ -277,7 +277,7 @@ static void rt2400pci_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 	 */
 	rt2x00pci_register_read(rt2x00dev, BCNCSR1, &reg);
 	rt2x00_set_field32(&reg, BCNCSR1_PRELOAD,
-			   PREAMBLE + get_duration(IEEE80211_HEADER, 2));
+			   PREAMBLE + get_duration(IEEE80211_HEADER, 20));
 	rt2x00pci_register_write(rt2x00dev, BCNCSR1, reg);
 
 	/*

drivers/net/wireless/rt2x00/rt2500pci.c

@@ -277,7 +277,7 @@ static void rt2500pci_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 	 */
 	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)

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -280,7 +280,7 @@ static void rt2500usb_config_type(struct rt2x00_dev *rt2x00dev, const int type,
 	 */
 	rt2500usb_register_read(rt2x00dev, TXRX_CSR20, &reg);
 	rt2x00_set_field16(&reg, TXRX_CSR20_OFFSET,
-			   (PREAMBLE + get_duration(IEEE80211_HEADER, 2)) >> 6);
+			   (PREAMBLE + get_duration(IEEE80211_HEADER, 20)) >> 6);
 	if (type == IEEE80211_IF_TYPE_STA)
 		rt2x00_set_field16(&reg, TXRX_CSR20_BCN_EXPECT_WINDOW, 0);
 	else