P2P mode problems

[Ben Hardill]

Hi,

I've been trying to have a play with the new P2P mode in the attempt to 
get up a service on a device that a Android application can interact with.

I've followed the build instructions from 
http://wireless.kernel.org/en/developers/p2p/howto.

I'm using TP-Link TL-WN821N USB adapter (it uses the ath9k_hw driver)

I've been playing with the wpa_cli in interactive mode to start with and 
things like p2p_find seam to be working fine, p2p_group_add is giving 
the following error:

  > p2p_find
OK
<3>P2P-DEVICE-FOUND 32:85:a9:4a:97:d5 p2p_dev_addr=32:85:a9:4a:97:d5 
pri_dev_type=1-0050F204-1 name='Ben-Nexus7' config_methods=0x188 
dev_capab=0x24 group_capab=0x0
<3>P2P-DEVICE-FOUND a2:0b:ba:b9:3a:ca p2p_dev_addr=a2:0b:ba:b9:3a:ca 
pri_dev_type=10-0050F204-5 name='Ben-Galaxy' config_methods=0x188 
dev_capab=0x25 group_capab=0x0
p2p_group_add
 > OK
<3>P2P-FIND-STOPPED
<3>CTRL-EVENT-CONNECTED - Connection to 64:70:02:21:88:15 completed 
(auth) [id=0 id_str=]
<3>P2P-GROUP-STARTED wlan0 GO ssid="DIRECT-QL" freq=2412 
passphrase="TqyvQpc6" go_dev_addr=64:70:02:21:88:15
<4>Could not connect to kernel driver

A little searching suggested that the device driver may not be enabled 
for AP mode (all be it old posts). Given that the howto suggests using 
ath9k devices and iw list says it supports AP mode. Does anybody have 
any other ideas what could be wrong?

I'm currently prototyping this on my Raspberry Pi running the 3.2.27+ 
kernel from the raspbian release. I have also tried it on my Fedora 17 
Laptop and I don't get a different issue.

Anybody got any suggestions as to what might be wrong and how to fix it?

Thanks,

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