Re: WARNING with ath9k_htc on TL-WN721N

[Oleksij Rempel <linux@rempel-privat.de>]

Hi,

thank you.

please do some tests for me.

1. run wireless adapter without other devices on this bus.

> Bus 002 Device 003: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n
> Bus 002 Device 011: ID 03f0:8607 Hewlett-Packard Optical Mobile Mouse
> Bus 002 Device 005: ID 0403:6001 Future Technology Devices International, Ltd
> FT232 USB-Serial (UART) IC
> Bus 002 Device 006: ID 413c:8187 Dell Computer Corp. DW375 Bluetooth Module

probably Bluetooth can't be removed, so disable it by software.

2. if this warning disappear, plug them back and rung kernel with 
attached patch. I wont to see if this warning related to channel scan.

3. try latest wireless-next kernel
https://git.kernel.org/cgit/linux/kernel/git/linville/wireless-next.git/

there are some patches which will affect usb communication, this will be 
visible on your hardware, in good or bad way. Will see how it performs 
in your situation.

I assume this warning is related to usb bandwidth. Since we use BULK 
transfer, we will get only rest of it. If other devices use ISO or 
Interrupt, They well have priority.

> I'm not using the Intel card listed in lspci. (the iwldvm module is loaded but
> the interface is down).
>
> Cheers,
>
>
> On Thu, Sep 05, 2013 at 12:25:06PM +0200, Oleksij Rempel wrote:
>> Am 05.09.2013 12:09, schrieb Antonio Quartulli:
>>> Hello list,
>>>
>>> I ma connected to my WPA2-PSK protected network and from time to time I get the
>>> following warning in dmesg. I don't experience any malfunctionng but I thought
>>> it was worth reporting. My kernel version is linux-3.10.10. I remember I've seen
>>> this warning also with previous versions.
>>>
>>> The device I use is a TP-LINK TL-WN721N.
>>> lsusb says:
>>>
>>> Bus 002 Device 003: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n
>>>
>>> Cheers,
>>>
>>
>> Hi Antonio,
>>
>> pleas send out of lsusb and lspci.
>>
>>
>> --
>> Regards,
>> Oleksij
>


-- 
Regards,
Oleksij