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Re: wireless-testing regression: iwl3945 scan fails

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Kalle Valo <kalle.valo@xxxxxx> writes:

> Good morning,
>
> I just upgraded to rc3-wl (commit 225b6807) and my iwl3945 doesn't work
> anymore, even scan fails. I don't have time to investigate this right
> now, but I'll try to find some time during the evening.

I have looked at this now a bit and I don't think this is an iwl3945
problem. Scanning seems to stall in some situations and iwl3945 doesn't
even receive the scan command. 

Here's an example what's happening with wpa_supplicant from debian
unstable:

$ sudo ifup wlan0

[  104.468073] iwl3945 0000:03:00.0: firmware: requesting iwlwifi-3945-2.ucode
[  104.533234] iwl3945 0000:03:00.0: loaded firmware version 15.32.2.9
[  104.612049] phy0: device now idle
[  104.613091] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  106.968392] phy0: device no longer idle - scanning
[  109.561397] phy0: device now idle
[  109.563737] wlan0: deauthenticating by local choice (reason=3)
[  109.563743] phy0: device no longer idle - in use

[waited a while] 

$ sudo iwlist wlan0 scan
wlan0     Interface doesn't support scanning : Device or resource busy

$ sudo iwlist wlan0 scan
wlan0     Interface doesn't support scanning : Device or resource busy

$ sudo wpa_action wlan0 stop

[  191.649653] wlan0: deauthenticating by local choice (reason=3)
[  191.697619] phy0: device now idle

Also I have been able to reproduce the problem once with iw. For some
strange reason I have had to reboot my laptop to reproduce this,
unloading all wireless related modules (expect rfkill which I can't
unload due to dependencies) is not enough.

-- 
Kalle Valo
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