mmc: sdhci-pci: Fix bus power failing to enable for some Intel controllers
Some Intel controllers (e.g. BXT) might fail to set bus power after a D3 -> D0 transition due to the present state not yet having propagated. Retry for up to 2 milliseconds. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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