linux-kernel - Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH

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Date:	Mon, 13 Sep 2010 20:56:43 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Tomoya MORINAGA <morinaga526@....okisemi.com>
Cc:	Linus Walleij <linus.ml.walleij@...il.com>,
	Masayuki Ohtake <masa-korg@....okisemi.com>,
	meego-dev@...go.com, LKML <linux-kernel@...r.kernel.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	qi.wang@...el.com, yong.y.wang@...el.com,
	andrew.chih.howe.khor@...el.com, arjan@...ux.intel.com,
	gregkh@...e.de, Thomas Gleixner <tglx@...utronix.de>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH_SPI driver to 2.6.35

On Tue, Sep 14, 2010 at 11:52:30AM +0900, Tomoya MORINAGA wrote:
> ----- Original Message ----- 
> From: "Grant Likely" <grant.likely@...retlab.ca>
> To: "Linus Walleij" <linus.ml.walleij@...il.com>
> Cc: "Masayuki Ohtake" <masa-korg@....okisemi.com>; <meego-dev@...go.com>;
> "LKML" <linux-kernel@...r.kernel.org>; "David Brownell"
> <dbrownell@...rs.sourceforge.net>; <qi.wang@...el.com>;
> <yong.y.wang@...el.com>; <andrew.chih.howe.khor@...el.com>;
> <arjan@...ux.intel.com>; <gregkh@...e.de>; "Tomoya MORINAGA"
> <morinaga526@....okisemi.com>; "Thomas Gleixner" <tglx@...utronix.de>;
> "David Woodhouse" <dwmw2@...radead.org>
> Sent: Friday, September 10, 2010 1:55 PM
> Subject: Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH_SPI driver to 2.6.35
> 
> 
> > On Thu, Sep 09, 2010 at 10:58:38PM +0200, Linus Walleij wrote:
> > > 2010/9/3 Masayuki Ohtake <masa-korg@....okisemi.com>:
> > >
> > > > Each instance of our SPI device has the same vendor ID and device ID.
> > > > Thus, I think it is impossible to be called probe() for each instance.
> > >
> > > Looking at you latest patch it appears you could :-)
> > > That solves the problem pretty nicely.
> >
> > Actually, it doesn't look like he did.  It looks to me that the
> > ability to support multiple spi bus instances on a single PCI device
> > has simply been removed.  I don't know if that is because it simply
> > isn't needed yet, or if it is because Ohtake-san doesn't quite
> > understand what were suggesting.
> 
> We wanted you to accept multi-instance the SPI patch.
> But seeing maintainer's comments, I felt it is difficult to be accepted.
> Thus, I have deleted whole of multi-instance code.
> 

I've got no problem with the driver supporting multiple instances.  My
comment is simply that it should be implemented in a different way.
But it isn't a big deal.  Multi-instance can be added back into the
driver after the single-instance version is merged.

g.

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