[lwlan-user] timing issues with udev and firmware loading

[Tormod Volden]

Hi,
I have some trouble with the new (svn version 1851) wlan_wext_write
auto-enabling and loading of firmware through udev scripts. I reported
this in http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=465681 but I
think it is not Debian-specific:

"The firmware loading fails because when /etc/wlan/wlan-udev.sh is
run, the wlan0 interface is not available
for wlanctl-ng:

wlanctl-ng: No such device
wlanctl-ng: No such device
prism2dl: No such device

Running it manually later works fine. I inserted a "sleep 2" on the
top of wlan-udev.sh and then it works
fine. It can seem like the udev rule 84-linux-wlan-ng runs the
wlan-udev.sh script "too early". I also stopped
network-manager to verify that it was not to blame.

However, if I echo 0 > /sys/module/p80211/parameters/wlan_wext_write,
the firmware loading works. So this
problem might be related to the new auto-enabling in the driver."

Does anyone else experience similar problems?

Tormod