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

[Shawn Guo]

On Wed, Aug 01, 2012 at 03:40:53PM +0800, Shawn Guo wrote:
> 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.
> 
I'm saying that kref_put on a kref that is never called on by kref_get
will not trigger the release.

Regards,
Shawn