[SPAM] wpa supplicant and scan problem.

[Dan Williams]

On Tue, 2008-01-15 at 12:28 -0500, Wang Baisheng wrote:
> Hi, all
> 	
> 	I use wpa supplicant 0.5.8 and wext driver. Kernel is 2.6.23.1.
> 
> 	Now I'v met a issue that After I connected to an AP successfully, I power 
> down my AP and at the same time I ask wpa supplicant to scan by dbus 
> interface. Then wpa supplicant seems to met some problem, its output:
> 
> .....
> Ignore event for foreign ifindex 2
> Setting scan request: 0 sec 0 usec
> Starting AP scan (broadcast SSID)
> Scan timeout - try to get results
> ioctl[SIOCGIWSCAN]: Resource temporarily unavailable
> Scan results: -1
> Failed to get scan results
> Failed to get scan results - try scanning again
> Setting scan request: 1 sec 0 usec
> Starting AP scan (broadcast SSID)
> Scan timeout - try to get results
> ioctl[SIOCGIWSCAN]: Resource temporarily unavailable
> Scan results: -1
> Failed to get scan results
> .....
> 
> 	I have to unload/load wi-fi kernel driver to make all to work again.

If you have to rmmod/modprobe the driver _ever_, then it's almost
definitely a driver bug.  What wireless hardware?  What driver version
(if you're using an out-of-kernel driver)?

Dan