Hi QW,

Are you configuring P2P client or P2P GO?
We recently have fixed one TX timeout issue. Can you please check if this patch 
helps:

http://git.kernel.org/cgit/linux/kernel/git/linville/wireless-testing.git/commit/drivers/net/wireless/mwifiex?id=d76744a93246eccdca1106037e8ee29debf48277

If this patch does not work for you, could you please share your p2p 
configuration file and steps?

Thanks,
Avinash

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of QW
Sent: Sunday, October 26, 2014 5:30 PM
To: [email protected]
Subject: p2p doesn't work at 5GHz by using mwifiex driver

Hi All,

I have a wifi/BT combo module with Marvell's SD8787 dual frequency (2.4GHz and 
5GHz) chipset on it.

When I try to build a p2p connection with other 5Ghz capable wireless device 
(Nexus 4), the connection will never be built at 5GHz.
Same module I install on a linux-pc platform with kernel version
3.17.1 has no problem to build a 5G p2p connection.

The firmware I am using is from the Marvell git repo at 
git://git.marvell.com/mwifiex-firmware.git
Using this latest commit:

commit 3f45b8c4cc1eb1d102bc3486b19677332dd215ab
Author: Avinash Patil <[email protected]>
Date:   Fri Sep 12 21:05:15 2014 +0530

linux-firmware: update Marvell SD8787 firmware version p52

Version 14.66.35.p52
Note that this version doesn't support BT-AMP.
The image can be downloaded through either WLAN or Bluetooth.

Signed-off-by: Avinash Patil <[email protected]>
Signed-off-by: Frank Huang <[email protected]>

With iw phy phy0 info, I can see that 5GHz frequency is listed. And I can also 
use this module to connect a 5G wireless router without problem.

The mwifiex driver is from kernel version 3.10.44, which is not allowed to be 
upgraded to the latest kernel version. I cannot use backports either, due to 
the 3.10 version.

Besides, there is an sdio error occurs very often when a p2p connection is 
being built:

[20525.984188] mwifiex_sdio mmc0:0001:1: 2022598 : Tx timeout(#1), bss_type-num 
= 2-0

then the p2p connection will be failed to be built with the error:

<3>P2P-GROUP-FORMATION-FAILURE
<3>P2P-GROUP-REMOVED wlan0 GO reason=FORMATION_FAILED

I don't know if this is related to the no-5GHz issue.

Any ideas? Thanks!

Cheers,
Qiuye
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