From: Luciano Coelho <luciano.coelho@nokia.com>
To: ext Ohad Ben-Cohen <ohad@wizery.com>
Cc: Shahar Levi <shahar_levi@ti.com>, linux-wireless@vger.kernel.org
Subject: Re: [PATCH v4 ] wl12xx: BA Initiator support
Date: Tue, 30 Nov 2010 09:15:52 +0200 [thread overview]
Message-ID: <1291101352.1673.112.camel@powerslave> (raw)
In-Reply-To: <AANLkTi=y38YDVFQxS--2074FpQNsDD7iWqVjF77Gg_dg@mail.gmail.com>
On Mon, 2010-11-29 at 23:07 -0800, ext Ohad Ben-Cohen wrote:
> On Mon, Nov 29, 2010 at 10:11 PM, Luciano Coelho
> <luciano.coelho@nokia.com> wrote:
> ...
> > In theory the API *has* changed, not just extended. Check this:
> >
> > - ACX_BA_SESSION_RESPONDER_POLICY = 0x0055,
> > - ACX_BA_SESSION_INITIATOR_POLICY = 0x0056,
> > + ACX_BA_SESSION_POLICY_CFG = 0x0055,
> > + ACX_BA_SESSION_RX_SETUP = 0x0056,
> >
> > But in practice, this doesn't matter, because we were not using the
> > RESPONDER/INITIATOR commands before...
>
> Right. So an old driver will still work with this new firmware.
>
> > It's basically just those two extra commands that were added. And one
> > new event that is part of a future patch.
> >
> > In theory, we could check the firmware revision after boot and bail out
> > if the version doesn't match.
>
> Why not just disable BA sessions in this case (and keep that new event
> masked), and let the driver keep running (just like it does today) ?
>
> This way the new driver will work even with the old firmware (yes,
> with degraded functionality, but most random ppl will just not care),
> and of course, the old driver will keep working with the new firmware.
>
> For us developers who lurk in linux-wireless it seems like a trivial
> change, but if we consider the growing size of the 12xx community, and
> the long period of time for which such a change will be effective (ppl
> upgrading to latest compat, ppl that will one day upgrade to 2.6.38,
> future ppl that will bisect and cross this firmware name change,
> etc...), it's actually a lot of accumulated pain.
>
> To keep our community happy, I vote to eliminate this pain when not necessary.
Hear, hear!
Shahar, can you fix that?
--
Cheers,
Luca.
next prev parent reply other threads:[~2010-11-30 7:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-29 13:42 [PATCH v4 ] wl12xx: BA Initiator support Shahar Levi
2010-11-30 0:44 ` Ohad Ben-Cohen
2010-11-30 6:11 ` Luciano Coelho
2010-11-30 7:07 ` Ohad Ben-Cohen
2010-11-30 7:15 ` Luciano Coelho [this message]
2010-11-30 9:06 ` Shahar Levi
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