[PATCH v3 4/4] memory: emif: add device tree support to emif driver

Greg Kroah-Hartman gregkh at linuxfoundation.org
Fri Jun 29 17:07:52 EDT 2012


On Fri, Jun 29, 2012 at 07:16:19PM +0530, Shilimkar, Santosh wrote:
> Greg,
> 
> On Tue, Jun 26, 2012 at 1:19 PM, Shilimkar, Santosh
> <santosh.shilimkar at ti.com> wrote:
> >
> > On Tue, Jun 26, 2012 at 10:56 AM, Rajendra Nayak <rnayak at ti.com> wrote:
> > > On Tuesday 26 June 2012 10:53 AM, Shilimkar, Santosh wrote:
> > >>
> > >> On Tue, Jun 26, 2012 at 10:49 AM, Rajendra Nayak<rnayak at ti.com>  wrote:
> > >>>
> > >>> On Tuesday 26 June 2012 10:39 AM, Shilimkar, Santosh wrote:
> > >>>>>>
> > >>>>>>
> > >>>>>> +#if defined(CONFIG_OF)
> > >>>>>>>
> > >>>>>>>  >    +static const struct of_device_id emif_of_match[] = {
> > >>>>>>>  >    +             { .compatible = "ti,emif-4d" },
> > >>>>>>>  >    +             { .compatible = "ti,emif-4d5" },
> > >>>>>>>  >    +             {},
> > >>>>>>>  >    +};
> > >>>>>>>  >    +MODULE_DEVICE_TABLE(of, emif_of_match);
> > >>>>>>>  >    +#endif
> > >>>>>>>  >    +
> > >>>>>>>  >      static struct platform_driver emif_driver = {
> > >>>>>>>  >           .remove         = __exit_p(emif_remove),
> > >>>>>>>  >           .shutdown       = emif_shutdown,
> > >>>>>>>  >           .driver = {
> > >>>>>>>  >                   .name = "emif",
> > >>>>>>>  >    +#if defined(CONFIG_OF)
> > >>>>>>>  >    +             .of_match_table = of_match_ptr(emif_of_match),
> > >>>>>>>  >    +#endif
> > >>>>>
> > >>>>>
> > >>>>>>
> > >>>>>>  Are these two still #if defined needed?
> > >>>>>>
> > >>>>>>  Also, what about the IS_DEFINED macro?
> > >>>>>>
> > >>>>
> > >>>> Yes. To avoid the build break in !DT build.
> > >>>>
> > >>>
> > >>> No, infact of_match_ptr is there just so you can avoid a
> > >>> #ifdef around and not break !CONFIG_OF.
> > >>
> > >>
> > >> Need to recheck but the build was throwing error becasue of
> > >> "emif_of_match"
> > >> mostly.
> > >
> > >
> > > You still need the first one. I meant the second one around
> > > 'of_match_ptr' should be removed.
> > >
> > > With !CONFIG_OF, of_match_ptr(_ptr) is just defined as NULL.
> > >
> > Yep. That make sense too.
> > Will drop the second check.
> >
> Posted the entire series again with updated $subject patch.
> With your ack, I will ask Tony to pull this series for 3.6.

Sent them where?  I didn't see a copy here :(



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