Re: [Rt2400-devel] Please pull 'upstream' branch of rt2x00

[Ivo van Doorn <ivdoorn@gmail.com>]

On Tuesday 05 August 2008, Larry Finger wrote:
> Will Dyson wrote:
> > On Mon, Aug 4, 2008 at 10:36 AM, Ivo van Doorn <ivdoorn@gmail.com> wrote:
> >> Hi John,
> >>
> >> Only 5 patches, but they do bump rt2x00 to a new version: 2.2.0
> >> This series will add HW crypto support to rt2x00, by default it
> >> has been enabled for rt61pci and rt73usb.
> > 
> > Seems to work well on my rt61pci card!
> > 
> > In fact, it reports a higher link quality (and maintains a higher
> > bitrate) than the version in current wireless-testing. The quality
> > report also fluctuates less than previously. This is consistent over a
> > few hours of testing with streaming PCM audio.
> > 
> > I do get a lockdep warning when bringing up the device, however.
> > 
> > =============================================
> > [ INFO: possible recursive locking detected ]
> > 2.6.27-rc1-rt2-wl #1
> > ---------------------------------------------
> > rt61pci/4405 is trying to acquire lock:
> >  (_xmit_IEEE80211#2){-...}, at: [<ffffffffa014cc52>]
> > ieee80211_scan_completed+0x172/0x320 [mac80211]
> > 
> > but task is already holding lock:
> >  (_xmit_IEEE80211#2){-...}, at: [<ffffffffa014cc52>]
> > ieee80211_scan_completed+0x172/0x320 [mac80211]
> > 
> 
> I get that same lockdep warning when using the mainline kernel with b43. It 
> doesn't seem to cause any problems.

Sounds like a mac80211 bug then, can't find something obvious at first glance,
but perhaps Johannes has an idea?

Ivo