On Wed, Aug 01, 2012 at 07:14:45PM +0200, Johannes Berg wrote: > On Wed, 2012-08-01 at 11:19 -0500, Seth Forshee wrote: > > On Wed, Aug 01, 2012 at 05:53:58PM +0200, Johannes Berg wrote: > > > On Wed, 2012-08-01 at 17:51 +0200, Arend van Spriel wrote: > > > > On 08/01/2012 05:38 PM, Arend van Spriel wrote: > > > > >> brcmsmac needs to hold cfg80211_mutex before calling freq_reg_info... > > > > >> > > > > > >> > It looks like those calls were added in mid-June. > > > > >> > > > > > > I think mid-june sounds about right. We never observed the warning when > > > > > changes to use regulatory infrastructure were tested/reviewed. Should > > > > > this precondition be mentioned in cfg80211.h? > > > > > > > > > > Gr. AvS > > > > > > > > Diving in further it seems brcmsmac can not grab the cfg80211_mutex. So > > > > another solution is needed. > > > > > > Yeah I was going to say -- how can it possibly access that? It seems > > > that in some patch the API got broken, it should be taking the lock or > > > whatever ... I'll leave it to Luis to sort out though :-P > > > > In other drivers freq_reg_info only seems to get used by the regulatory > > notifiers, which get called with the lock held. brcmsmac is wanting to > > know whether or not OFDM is allowed when setting the channel though, and > > I didn't find that information anywhere outside the regulatory > > information. If there's another way then calling freq_reg_info() could > > be avoided. Or maybe we could add an OFDM flag to the channel > > information? > > Seems reasonable to add the flags (or some of them) to the channel > flags, yeah. Great, I'll work something up. Seth -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
