Re: [PATCH] mac80211: fix suspend/resume races with unregister hw

On Wed, Sep 07, 2011 at 09:50:29PM -0000, Michael Witten wrote:

My boot process is stalling proximate the following messages (after a period
of time, some other message might show up, but the boot never progresses much
further):

  cfg80211: World regulatory domain updated:
  cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
  cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

I bisected to this patch, namely via the following commit:
  
  commit ecb4433550f0620f3d1471ae7099037ede30a91e
  Author: Stanislaw Gruszka [off-list ref]
  Date:   Fri Aug 12 14:00:59 2011 +0200

Grr, crap.

Now, it may be the case that my system startup's scripts are doing something
funny, as the stall described above occurs after Arch Linux outputs:

  Waiting for UDev uevents to be processed

At this point, that's all I know.

What wireless driver are you using? If this is ipw2x00 please try
attached patch.

Thanks
Stanislaw