RE: Cache Control during mmc_suspend_host

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Saugata Das wrote:
> On 13 December 2011 11:57, Seungwon Jeon <tgih.jun@xxxxxxxxxxx> wrote:
> > Hi Saugata,
> >
> > Saugata Das wrote:
> >> Hi Seungwon Jeon
> >>
> >> I see a small issue with the implementation mmc_suspend_host,
> >>
> >> int mmc_suspend_host(struct mmc_host *host)
> >> {
> >> .....
> >>       err = mmc_cache_ctrl(host, 0);
> >> }
> >>
> >> So, within mmc_suspend_host we are disabling the cache. But I do not
> >> see a corresponding enabling of cache within mmc_resume_host. I
> >> suggest we have either enabling of cache within mmc_resume_host or
> >> within mmc_suspend_host, we replace mmc_cache_ctrl(host, 0) with the
> >> flush operation, mmc_flush_cache(host->card).
> >>
> > Currently,
> > Cache is enabled in mmc_init_card() during mmc_resume_host().
> >
> Thanks for your answer.
> 
> If mmc_card_keep_power is TRUE, then do you know why from mmc_resume
> we call mmc_init_card instead of just mmc_awake which should reduce
> some latency of system wakeup ?
> 
I didn't find that case of keeping the power
during sleep in mmc unlike sdio.

> 
> > Thanks,
> > Seungwon Jeon.
> >>
> >>
> >> Regards
> >> Saugata
> >> --
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