netdev - Re: SSB/b44 build failure

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Date:	Sat, 10 Mar 2007 20:27:25 +0100
From:	Michael Buesch <mb@...sch.de>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	"John W. Linville" <linville@...driver.com>,
	Randy Dunlap <rdunlap@...otime.net>, bunk@...sta.de,
	netdev@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: SSB/b44 build failure

On Saturday 10 March 2007 19:05, Christoph Hellwig wrote:
> On Sat, Mar 10, 2007 at 10:03:46AM -0500, John W. Linville wrote:
> > FWIW, this is coming from the port of b44 to use the SSB bus which
> > I'm carrying in the wireless-dev tree.
> > >
> > SSB (i.e. "Sonics Silicon Backplane") is a bus used in Broadcom SoCs
> > including the b44 and bcm43xx hardware.  The SSB bus driver and the
> > b44 port to SSB is being developed by Michael Buesch, the maintainer of
> > the bcm43xx driver.  I've been carrying the b44 SSB port in my tree for
> > Michael's convenience.  Just an FYI for those wondering what SSB is...
> 
> Btw, what's the reason this is in wireless-dev?  Could we please merge
> this code into mainline soonish (aka 2.6.22) instead of interwinding
> it with totally unrelated wireless changes?

nono, don't. SSB is still in heavy development and this would
slow it down by magnitudes.
The reason it's in wireless-dev is, because b44-ssb is simply just
a "sideeffect" of ssb. ssb is mainly written for bcm43xx. That
b44 also has a ssb bus is cool, so it can re-use the code. But
there's _no_ reason to get ssb mainline without bcm43xx going
mainline, too. b44-mainline does not depend on ssb. Current mainline
has the ssb code built into b44. The b44 port in wireless-dev just rips
that code out and uses the ssb subsystem (so it also adds
a few features to b44. For example the ability to dump and write
the EEPROM).

It's really helpful to have the development of b44-ssb in
wireless-dev, because there still are heavy changes in ssb.
Being required to merge a ssb change through mainline before
I can implement a new feature (or fix a bug) in bcm43xx-dev is just
not acceptable.

The _final_ merging is another story. I think a few days before
wireless-dev is merged mainline ssb and b44-ssb should be merged
mainline seperately. Just to make it clear that these are not
wireless related. (ssb is not wireless related, too. Strictly said).

Short: "totally unrelated wireless changes" is a false statement ;)

-- 
Greetings Michael.
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