[06/10,V2] spi: Add SPI driver for mx233/mx28

[Shawn Guo]

On Wed, Aug 01, 2012 at 08:45:19AM +0200, Marek Vasut wrote:
> > I must be missing something.  Why do almost all spi drivers call it in the
> > error path, even if there is no call to spi_master_get ?
> 
> To push the refcounting to 0, to deallocate the device, I'd say ...
> 
It's not going to work if spi_master_put is called without
spi_master_get being called before that.

Regards,
Shawn