Re: [PATCH RESEND] ARM: tegra: set regulator full constraints

[Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>]

On 10/31/2013 07:31 PM, Wei Ni wrote:
> On 10/31/2013 11:56 PM, Stephen Warren wrote:
>> On 10/31/2013 01:05 AM, Wei Ni wrote:
>>> Set full constraints during machine initialisation, so that the
>>> regulator_get() can get the dummy regulator if the regulator is
>>> physically present and enabled.
>>> Discussed this in the link:
>>> https://lkml.org/lkml/2013/10/8/40
>>
>> Is this needed to fix some bug that'll be in 3.13 or earlier, or does it
>> just solve a problem that will only be exposed in new code that will
>> appear in 3.14 or later?
> 
> Let me explain this patch.
> I discovered this problem when I worked on lm90 driver.
> When I appiled my lm90 power control patches (this patch still in
> review), I found the lm90 will be probed failed on Ventana board,
> because on this board, the lm90 regulator is physically present and
> enabled, so the lm90 driver can't use regulator_get() to get regulator,
> and if we didn't set this full contraints, it can't get the dummy
> regulator either, then probe failed.
> So I think it's better to applied this patch earliy, because this solve
> the compatible issue between Mark's dumy regulator patches, device
> driver and DT.

To be honest, I don't really understand the answer and I don't think
it's answering my question.

Anyway, Mark requested changes to the patch, so I'll wait for V2 anyway.