Re: [PATCH 0/2] Fix lockdep warning in brcmsmac

["Arend van Spriel" <arend@xxxxxxxxxxxx>]

On 08/01/2012 10:58 PM, Seth Forshee wrote:
> As reported by Josh Boyer, brcmsmac is producing lockdep warnings by
> calling freq_reg_info() without holding cfg80211_lock. Currently
> freq_reg_info() is the only way for a wireless driver to tell whether
> OFDM is allowed on the current channel, but cfg80211_lock is outside the
> scope of the wireless drivers.
> 
> Since other regulatory restrictions are communicated in the channel
> definition, it makes sense to do the same for OFDM. These patches add a
> new flag, IEEE80211_CHAN_NO_OFDM, which is set by regulatory to
> indicated OFDM operation is prohibited. brcmsmac is modifified to use
> this flag instead of consuming the regulatory data directly.
> 
> Thanks,
> Seth

I will try the patches on a lockdep-enabled kernel.

Gr. AvS

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