[PATCH 2/3] mmc: atmel-mci: stop using specific initcall

[Ludovic Desroches]

On Thu, Nov 20, 2014 at 03:13:30PM +0100, Arnd Bergmann wrote:
> On Thursday 20 November 2014 15:01:25 Ludovic Desroches wrote:
> > On Thu, Nov 20, 2014 at 12:10:25PM +0100, Arnd Bergmann wrote:
> > > On Thursday 20 November 2014 11:07:54 Ludovic Desroches wrote:
> > > > No more use late initcall to manage probing order. Use probe deferring
> > > > if needed. Then use module_platform_driver and clean init/exit
> > > > attributes.
> > > > 
> > > > Signed-off-by: Ludovic Desroches <ludovic.desroches at atmel.com>
> > > > 
> > > 
> > > Do we need this backported into stable kernels? It seems that
> > > the __init/__exit annotations will break things if you ever
> > > tried to unbind the device or run into deferred probing on
> > > earlier kernels.
> > 
> > Well, it is a bit complicated, if we backport it, then the mci driver
> > could be probed before the dma controller. Requesting dma chan will fail
> > and it will switch to pio mode.
> > 
> > So it has to be backported with the probe deferring. The issue is
> > that probe deferring patch is based on other patches removing non-dt
> > support which become useless only ine 3.19.
> > 
> 
> Should we just have the __init/__exit removal in backports then?

Yes. Do you want me to split this patch in order to have ony one for
__init/__exit removal and another one for late_initcall removal?


Ludovic