On Friday 06 April 2012 12:39:57 Janusz Dziedzic wrote: > With latest compat, wpa_supplicant seems p2p_concurent is set for > car9170 driver based on information from driver. > So, next after p2p_group_add new virtual interface is created for that > - p2p-wlan0-0. > > Next, carl9170_op_add_interface() return -EBUSY because there is > already main_vif (NL80211_IFTYPE_STATION) created by default on > startup. > Because of that p2p_group_add() always fail with such chipset and > p2p_concurent=1. > > STEPS: > - run wpa_supplicant > - run wpa_cli > - p2p_group_add > FAIL > > Is that chipset limitation we could add only new STA interface when > main_vif is also STA? <http://wireless.kernel.org/en/users/Drivers/carl9170#Multiple_Interfaces> no, it's not. But you'll have to go through several hoops to extend the driver to switch the "main" interface while the device is up and running. good luck! > Where could I find HW documentation for carl9170? HW documentation for carl9170? There's no such thing. But Qualcomm has some docs about the AR9170. > I suspect lower change is not acceptable because of HW limitation? > > main_vif = carl9170_get_main_vif(ar); > > if (main_vif) { > switch (main_vif->type) { > case NL80211_IFTYPE_STATION: > - if (vif->type == NL80211_IFTYPE_STATION) > + if ((vif->type == NL80211_IFTYPE_STATION) || > + (vif->type == NL80211_IFTYPE_AP)) > break; No, it's just the driver can't guarantee that such a configuration will be what you think it is. Regards, Chr -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
