Re: bss_info_change_notify warning (hacked 3.3.0-rc5+)

[Johannes Berg <johannes@sipsolutions.net>]

On Fri, 2012-03-09 at 10:31 -0800, Ben Greear wrote:
> On 03/07/2012 10:55 PM, Johannes Berg wrote:
> > On Wed, 2012-03-07 at 11:32 -0800, Ben Greear wrote:
> >> This is with a somewhat hacked 3.3.0-rc5+.  Just
> >> curious if this is a known problem.
> >>
> >>
> >> Seems very reproducible on my system.
> >>
> >>
> >> WARNING: at /home/greearb/git/linux-3.3.dev.y/net/mac80211/driver-ops.h:10 ieee80211_bss_info_change_noti)
> >
> > The warning means you're modifying an interface the driver doesn't (yet)
> > know about.
> >
> > It's odd that you should be running into this on config_beacon() though
> > since that can only execute when the interface is up ... can you print
> > out the interface name in the warning?
> 
> This is still reproducible in 3.3.0-rc6+ from yesterday.
> 
> 
> I create the VAP with this command:
> 
> ./local/sbin/iw phy wiphy0 interface add vap0 type __ap
> 
> 
> vap0:  Failed check-sdata-in-driver check, flags: 0x0

That's it? That doesn't create a warning here, and somehow you're
running into nl80211_set_wiphy() which isn't called if you execute just
that iw command.

johannes