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Re: [PATCH] mac80211: Export short-preamble bit to drivers

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On Wed, 2007-06-27 at 15:08 +0200, Michael Buesch wrote:
> On Wednesday 27 June 2007 10:55:00 Johannes Berg wrote:
> > On Mon, 2007-06-25 at 16:28 +0200, Michael Buesch wrote:
> > 
> > >  	case PRISM2_PARAM_PREAMBLE:
> > > -		local->short_preamble = value;
> > > +		if (value)
> > > +			local_to_hw(local)->conf.flags |= IEEE80211_CONF_SHORT_PREAMBLE;
> > > +		else
> > > +			local_to_hw(local)->conf.flags &= ~IEEE80211_CONF_SHORT_PREAMBLE;
> > > +		if (ieee80211_hw_config(local))
> > > +			ret = -EINVAL;
> > 
> > any reason not to return the actual error code from hw_config here? Not
> > that it'll be any different from -EINVAL I expect...
> 
> The reason is copy&paste from other PRISM2 IOCTLs ;)
> I'm OK with the real error code, too.

I don't really care either way.

> Though, the error code of hw_config is usually not useful _at all_.
> As it might not be the SHORT_PRMBL flag that produced it, but some of the
> other config settings.
> I would probably vote for any code in mac80211 to ignore that return value,
> except the places where a failure of hw_config would be fatal (init or
> places like that).

Yeah, there's a todo item saying that we need a way to just commit the
changed settings.

johannes

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