On Monday 07 April 2014 14:32:20 Mike Looijmans wrote: > On 04/07/2014 02:25 PM, Arnd Bergmann wrote: > > Judging from the kernel output, regulator_get_optional returns -ENODEV if the > supply wasn't found. > > Maybe the API is confusing (or wrong?) here. > > If you change the code as per your suggestion, the SD will not work unless you > explicitly assign supplies. And judging from what I've seen so far, I am the > first to have ever attached a power supply to this controller... It's certainly not very "optional" if it returns an error here. You could try to special-case the "-ENODEV" return here, but I think it would be better to change the regulator interface to be less confusing. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html