[PATCH v1 0/3]mmc: enable runtime PM support for mmc storage card

[Yunpeng Gao]

Hi,
    These patches are to enable the runtime PM support for mmc storage cards. 

    Currently, there's already runtime PM support in the mmc core layer. But
    for the mmc storage card (SD card, mmc card, eMMC device and so on) to
    work with runtime PM, it also needs both block driver and host controller
    driver to implement the runtime PM support, which are not presented in
    current kernel.

    These patches implemented the runtime PM for both block driver and PCI
    interface SDHCI host controller driver. It also tried to fix some issues
    of current runtime PM implementation of mmc core layer.
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