Hi Stefan,

Am Sonntag, Februar 10, 2019 11:06 CET, Stefan Sperling <[email protected]> 
schrieb:

> On Sat, Feb 09, 2019 at 06:56:45PM +0100, Sebastian Reitenbach wrote:
> > Hi,
> >
> > got a cheap TP-Link TL-WN821N, which shows up as Atheros AR7015 under 
> > Windows 10.
> >
> > athn0 at uhub3 port 3 configuration 1 interface 0 "ATHEROS USB WLAN" rev 
> > 2.00/2.02 addr 5
> > athn0: failed loadfirmware of file athn-open-ar7010 (error 2)
> > athn0: could not load firmware
> > athn0 at uhub3 port 3 configuration 1 interface 0 "ATHEROS USB WLAN" rev 
> > 2.00/2.02 addr 5
> > athn0: bad ROM checksum 0x2c64
> > athn0: could not read ROM
> > athn0: could not attach chip
>
> >
> > usbdevs -v:
> > addr 05: 0cf3:7015 ATHEROS, USB WLAN
> >          high speed, power 500 mA, config 1, rev 2.02, iSerial 12345
> >          driver: athn0
> >
> > Just wanted to make sure I don't miss anything, don't see that chpset 
> > somehow
> > listed in athn(4) page, so guess this is just not supported yet?
>
> Please try this device on a another USB port and/or another machine.
> There's a long-standing bug where these devices don't work on some
> USB host controllers with our drivers, in particular ehci(4).
>
> Last I tried plugging an athn(4) behind a hub, it would not work at all.
>

 I tried that device on my amd64 desktop, as well as on a i386, and mips64el 
notebook.
It's the same bad ROM checksum error I get on all three of them.

I've another athn stick which works well on all three:
athn0 at uhub3 port 3 configuration 1 interface 0 "ATHEROS USB2.0 WLAN" rev 
2.00/1.08 addr 5
athn0: AR9271 rev 1 (1T1R), ROM rev 13, address e8:de:27:15:9e:5e

The non-working one shows up as AR7015 in Windows, but I don't see a AR7015 
chipset
mentioned in athn(4), therefore I wanted to verify, if that particular chipset 
is actually
supported by our athn(4) at all?

cheers,
Sebastian

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