Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH_SPI driver to 2.6.35

From: Grant Likely
Date: Fri Sep 10 2010 - 00:56:08 EST


On Thu, Sep 09, 2010 at 10:58:38PM +0200, Linus Walleij wrote:
> 2010/9/3 Masayuki Ohtake <masa-korg@xxxxxxxxxxxxxxx>:
>
> > 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.

Regardless it doesn't matter. When or if the driver does need to be
modified to support multiple instances, it is a relatively straight
forward matter to refactor the current code into a platform_driver,
and create a new pci_driver that simply registers the matching
platform_device for each spi bus instance supported by the device.

g.
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