[PATCH] ARM: OMAP2+: gpmc: Fix kernel BUG for DT boot mode

Hiremath, Vaibhav
2012-10-10T14:19:40Z

On Wed, Oct 10, 2012 at 19:30:27, Porter, Matt wrote:
> On Tue, Oct 09, 2012 at 02:27:20PM +0530, Vaibhav Hiremath wrote:
> > With recent changes in omap gpmc driver code, in case of DT
> > boot mode, where bootloader does not configure gpmc cs space
> > will result into kernel BUG() inside gpmc_mem_init() function,
> > as gpmc cs0 gpmc_config7[0].csvalid bit is set to '1' and
> > gpmc_config7[0].baseaddress is set to '0' on reset.
> >
> > This use-case is applicable for any board/EVM which doesn't have
> > any peripheral connected to gpmc cs0, for example BeagleXM and
> > BeagleBone, so DT boot mode fails.
> >
> > This patch adds of_have_populated_dt() check before creating
> > device, so that for DT boot mode, gpmc probe will not be called
> > which is expected behavior, as gpmc is not supported yet from DT.
> >
> > Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
> > Cc: Afzal Mohammed <afzal@ti.com>
> > Cc: Tony Lindgren <tony@atomide.com>
> > Cc Paul Walmsley <paul@pwsan.com>
> > ---
> > This should go in for rc1, as this breaks AM33xx boot.
>
> Fixes BeagleBone on mainline.
>
> Tested-by: Matt Porter <mporter@ti.com>
>

Thanks Matt and Afzal,

Tony can this be picked up for rc1?? I know you have already sent pull
request for rc1, but by any chance you are planning to send another request?

Thanks,
Vaibhav
> -Matt
>