Fixed a typo in a comment: PLCP header length is in microseconds, not
milliseconds.

Signed-off-by: Jouni Malinen <jkm@devicescape.com>

Index: wireless-dev/net/d80211/ieee80211.c
===================================================================
--- wireless-dev.orig/net/d80211/ieee80211.c
+++ wireless-dev/net/d80211/ieee80211.c
@@ -637,7 +637,7 @@ static int ieee80211_frame_duration(stru
 		 * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
 		 * aSIFSTime = 10 usec
 		 * aPreambleLength = 144 usec or 72 usec with short preamble
-		 * aPLCPHeaderLength = 48 ms or 24 ms with short preamble
+		 * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
 		 */
 		dur = 10; /* aSIFSTime = 10 usec */
 		dur += short_preamble ? (72 + 24) : (144 + 48);

--
-- 
Jouni Malinen                                            PGP id EFC895FA