• Adrian Hunter's avatar
    mmc: sdhci-pci: Fix BYT sd card getting stuck in runtime suspend · 77a0122e
    Adrian Hunter authored
    A host controller for a SD card may need a GPIO for card detect in order
    to wake up from runtime suspend when a card is inserted.  If that GPIO is
    not configured, then the host controller will not wake up.  Fix that for
    the affected devices by not enabling runtime PM unless the GPIO is
    successfully set up.
    
    This affects BYT sd card host controller which had runtime PM enabled from
    v3.11.  For completeness, the MFD sd card host controller is flagged also.
    
    The original patch before rebasing (see link below) was tested on v3.11.10
    and v3.12.4 although the patch applied with some offsets and fuzz.  The
    original patch is here:
    
        http://marc.info/?l=linux-mmc&m=138676702327057Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
    Cc: stable <stable@vger.kernel.org> # 3.11+
    Signed-off-by: default avatarChris Ball <chris@printf.net>
    77a0122e
sdhci-pci.h 1.79 KB