[PATCH 14/17] i2c: nomadik: Fixup deployment of runtime PM

Ulf Hansson ulf.hansson at linaro.org
Thu Feb 13 09:12:49 EST 2014

On 10 February 2014 11:14, Ulf Hansson <ulf.hansson at linaro.org> wrote:
> On 5 February 2014 15:34, Linus Walleij <linus.walleij at linaro.org> wrote:
>> On Tue, Feb 4, 2014 at 4:58 PM, Ulf Hansson <ulf.hansson at linaro.org> wrote:
>>> Since the device is active while a successful probe has been completed,
>>> the reference counting for the clock will be screwed up and never reach
>>> zero.
>>> The issue is resolved by implementing runtime PM callbacks and let them
>>> handle the resources accordingly, including the clock.
>>> Cc: Alessandro Rubini <rubini at unipv.it>
>>> Cc: Linus Walleij <linus.walleij at linaro.org>
>>> Cc: Wolfram Sang <wsa at the-dreams.de>
>>> Signed-off-by: Ulf Hansson <ulf.hansson at linaro.org>
>> Hm do I read it right as patch 13 breaks runtime PM by leaving
>> the device active after probe() and this patch
>> 14 fixes it again? Maybe these two patches should be squashed
>> then.

In v2 I have now squashed patch 13 into this patch 14.

That means patch13 shall be dropped from this patchset.

Kind regards

> You are right; but the driver will still be working, you just don't
> get the benefit from inactivating the device at request inactivity -
> as you pointed out.
> The reason for why I wanted to do this as separate steps was to make
> it easier for reviewing, otherwise the patch(es) would have been quite
> big and messy. I am for sure open to  adopt to your proposal, but just
> wanted to give you some more background, before I go ahead and send a
> v2.
> Kind regards
> Ulf Hansson
>> Yours,
>> Linus Walleij

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