Re: WARNING with ath9k_htc on TL-WN721N

[Antonio Quartulli <ordex@autistici.org>]

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On Thu, Sep 05, 2013 at 04:09:04PM +0200, Oleksij Rempel wrote:
> Forgot attachment.
> 
> 
> Am 05.09.2013 16:07, schrieb Oleksij Rempel:
> > 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.

Ok Oleksij, I'll try to do these tests soonish. You think the problem is
triggered by a scan operation?

If so, I'll try to reproduce it by scanning. Till now I had no clue about the
cause.

Cheers,


-- 
Antonio Quartulli

..each of us alone is worth nothing..
Ernesto "Che" Guevara

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