Is there a bug in 2.6.29-rc8 support of Ad-Hoc mode?

[Charles Gordon <digigordo@gmail.com>]

I am trying to get a driver I'm developing to work with Ad-Hoc mode on
Linux 2.6.29-rc8.  I am running into a problem.  I have traced it down
to the routine ieee80211_scan_work.  I use the following commands to
start Ad-Hoc mode:

ifconfig wlan0 down
iwconfig wlan0 mode Ad-Hoc essid "AdHocID"
ifconfig wlan0 up

What happens is that the iwconfig command starts a scan for other PCs
using the AdHocID before the second ifconfig command is executed
(while the interface is still down).  When ieee80211_scan_work is
executed, it bails out at this statement:

	/*
	 * Avoid re-scheduling when the sdata is going away.
	 */
	if (!netif_running(sdata->dev))
		return;

This aborts the scan, but leaves local->sw_scanning set.  This
prevents future scans from running.  When ieee80211_start_scan
executes it bails out at this statement:

	if (local->sw_scanning || local->hw_scanning) {
		if (local->scan_sdata == scan_sdata)
			return 0;
		return -EBUSY;
	}

Can someone either confirm that this is a known problem with
2.6.28-rc8, or tell me what my driver could be doing to cause this
problem?

Thanks for any help you can provide.