[PATCH] spi/spi-altera: Allow to explicitely override bus number via dts

[Mark Brown]

On Wed, Feb 01, 2012 at 03:25:33PM +0100, Frederic LAMBERT wrote:

> > > Because this bus number is used to create the device name on
> > > /sys/bus/spi/..., name that the user app must know to work with.

> > Why must the user application know this?  What is missing to allow the
> > application to discover an appropriate device to work with automatically?

> Good question. I have a nvSRAM that I access using the AT25 driver, and I
> don't know how access it without its /sys/bus/ name. If there is another
> way, it is worse to consider it.

For this I'd expect the application to be able to enumerate all the SPI
devices and offer the user a selection of those with the appropriate
driver bound (though I can see that simple scripts might not have
bothered).