On Wed, 2015-01-07 at 15:48 +0200, Arik Nemtsov wrote:
> >
> >> >
> >> >> > Also, the only reason this can happen anyway is when you call "can
> >> >> > beacon" for a station interface - which seems nonsensical. Given that
> >> >>
> >> >> This is not true. This happens with current code for a p2p-go
> >> >> interface during channel validity checks in reg.c.
> >> >
> >> > Not sure I see this? The only thing doing wdev locking is
> >> > cfg80211_go_permissive_chan(), no? And that only for station interfaces.
> >>
> >> cfg80211_go_permissive_chan is called from cfg80211_reg_can_beacon,
> >> currently only for GO interfaces, but for STA also in the future
> >> (hopefully).
> >> The latter is called during channel validity checks for GO.
> >
> > Ok.
> >
> > Should I just apply the patch as it is then?
> 
> It fixes a real existing deadlock, so I think so, yea.

Is it needed on 3.19?

johannes

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