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2e5a7b49a0
mac80211 sends _both_ channel and frequency in it's scan results, with frequency first and channel second (it's since been fixed to send channel first and frequency second to work around this issue). This results in wpa_supplicant getting the right value when the frequency comes, but overwriting the value with '0' when the channel comes because wpa_supplicant can't handle 5GHz channel numbers. So if a valid previous SIOCGIWFREQ event came in, don't try to overwrite it.
wpa_supplicant and hostapd v0.6.x --------------------------------- Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi> and contributors All Rights Reserved. These program is dual-licensed under both the GPL version 2 and BSD license. Either license may be used at your option. This package may include either wpa_supplicant, hostapd, or both. See README file respective subdirectories (wpa_supplicant/README or hostapd/README) for more details. Source code files have been moved around in v0.6.x releases and compared to earlier releases, the programs are now build by first going to a subdirectory (wpa_supplicant or hostapd) and creating build configuration (.config) and running 'make' there (for Linux/BSD/cygwin builds).