Re: Unable to load iwlagn module: Failed to register hw (error -17)

[Johannes Berg <johannes@sipsolutions.net>]

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Hi,

> On Tue, 2009-07-14 at 21:25 -0700, John Ranson wrote:
> > [    4.252445] iwlagn 0000:03:00.0: Tunable channels: 11 802.11bg, 13
> > 802.11a channels
> > [    4.252556] iwlagn 0000:03:00.0: irq 30 for MSI/MSI-X
> > [    4.252945] iwlagn 0000:03:00.0: Failed to register hw (error -17)
> > [    4.253255] iwlagn 0000:03:00.0: PCI INT A disabled
> > [    4.253263] iwlagn: probe of 0000:03:00.0 failed with error -17
> 
> This is ieee80211_register_hw() returning error 17 (EEXIST). One spot I
> saw where this can happen is if you are trying to register with the same
> name (wlanX) already used by another netdevice. Does this sound possible
> in your setup?
> 
> Johannes - do you perhaps have an idea when this can happen?

This is strange -- I've had one report of this with 3945 which went away
and seemed to have been a compat only issue, I suspect this is also just
a compat-wireless issue, but I have no idea.

-EEXIST should only happen if something has already claimed something in
sysfs, but not with netdevs (i.e. wlan0 would just be renamed to wlan1)
and phy0 is numbered all the time so that can't be it either. I don't
know.

John, can you poke around in sysfs, /sys/class/ieee80211/ and see if
there's anything there when loading fails?

johannes

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