On 10/19/2011 04:55 PM, Nico Schottelius wrote:
> Hey Arend,
> 
> 
> Arend van Spriel [Wed, Oct 19, 2011 at 04:43:27PM +0200]:
>> I actually don't see the rtnl_lock or mutex_lock that was listed in your
>> original dmesg. There are a lot of warning traces from mac80211.c.

The warnings are probably a diversion. This is the warning in
ieee80211_rx():

			if (WARN_ON(status->rate_idx < 0 ||
				    status->rate_idx >= sband->n_bitrates))
				goto drop;
			rate = &sband->bitrates[status->rate_idx];

This means that the driver (brcmsmac) provides a data packet with an
out-of-range rate index. This reminded me of a fix I made about a month
ago. Could you apply the attached patch file. It is based on:

commit bee709ab1d390afe69e4407bc86bb706c6fb2965
Merge: ad1c761 1f2c7e9
Author: Nico Schottelius <nico@kr.ethz.ch>
Date:   Tue Oct 18 00:04:05 2011 +0200

    Merge branch 'fix-edp-vdd-power' of ../keithp/linux

As it drops receive packets it may be your problem. Is your AP on 5GHz?

Gr. AvS