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

[Shawn Guo]

On Wed, Aug 01, 2012 at 04:31:04AM +0200, Marek Vasut wrote:
> > Couple of reasons for asking: No other SPI master driver calls it in the
> > remove function (unless I missed it), most drivers don't call it in the
> > probe function error path, and if I call it in the remove function in a
> > SPI master driver I am working on, and load/unload the module several
> > times in a row, I get a nasty kernel crash.
> 
> It seems the spi_master class takes care of that kfree() in 
> spi.c:spi_master_release() . Good catch, thanks!
> 
I do not hardware setup to confirm that right away.  When
spi_master_release will be called exactly?  The time that
spi_master_put gets called?  I'm trying to understand if the kfree
is not needed only in remove function, or both probe and remove.

Regards,
Shawn