[Meego-kernel] [patch v2 2/2]MFLD mmc: Use the mutex to protect eMMC0 host controller

[Tardy, Pierre]

YunPeng,

>  drivers/mmc/card/block.c |   96 ++++++++++++++++++++++++----------------------
>  drivers/mmc/core/core.c  |   20 ++++++++++
>  drivers/mmc/core/mmc.c   |   70 ++++++++++++++++++++++++++++++++-
>  drivers/mmc/host/sdhci.c |   49 ++++++++++++++++++++++-

This patch looks like it is *very* intrusive. There's a big chance that you will be kicked from upstream :)

The semantic does not sound like there is a very difference from what runtime_pm patches are doing.
You will need an acquire_ownership() at the same place you would need a pm_runtime_get()

Why an acquire_ownership() could not be called in the runtime_pm resume callback?
And release_ownership() could be called in the runtime_pm suspend callback?

Regards,
Pierre

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