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SubjectRe: [PATCH 2/2] regulator: max8660: Add error message for missing regulator data
On Tue, Mar 24, 2015 at 09:08:57AM -0700, Mark Brown wrote:
> On Tue, Mar 24, 2015 at 01:08:03PM +0100, Markus Pargmann wrote:
> > The driver probe fails when there is a subdevice without platform_data.
> > Add a error message so it is clear what failed.
>
> ...
>
> > for (i = 0; i < pdata->num_subdevs; i++) {
> > - if (!pdata->subdevs[i].platform_data)
> > + if (!pdata->subdevs[i].platform_data) {
> > + dev_err(dev, "No data for %d regulator\n", i);
> > return -EINVAL;
> > + }
>
> Why is the platform data mandatory? In general the goal is that a
> regulator driver should be able to probe with no platform data.

subdevs[]->platform_data is a struct regulator_init_data which has to
exist so we can register the regulator later.

Best Regards,

Markus

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