FW: [PATCH] mmc: mmci: Gate the clock in runtime suspend to save power

[Kevin Liu]

2012/12/13 Ulf Hansson <ulf.hansson at linaro.org>:
> On 13 December 2012 11:11, Russell King - ARM Linux
> <linux at arm.linux.org.uk> wrote:
>> On Thu, Dec 13, 2012 at 10:04:46AM +0100, Ulf Hansson wrote:
>>> Anyway, this need to be thought of as future step, since this patch is
>>> not changing anything to that sequence as Kevin also is pointing out.
>>
>> Given that Kevin is talking about stuff in sdhci as if it affects MMCI,
>> and that neither of you have picked that up, you're *still* not gaining
>> any confidence from me that you're actually thinking about the changes
>> you're making.  So I'm not really caring about how many acks your patches
>> get, I'm still going to be reluctant to apply them without thinking about
>> them for a bit.
>
> MMCI is doing "pm_runtime_get_sync" in it suspend. So the same
> principles as Kevin is describing for sdhci goes for MMCI. Sorry if
> this was not clearly pointed out.
>
sorry for my unclear words. I just use sdhci directly to explain this.
It's similar for sdhci and mmci on this point. pm_runtime is
temporarily disabled during suspend/resume.

Thanks
Kevin