mmc: sdhci-pci: Workaround GLK firmware failing to restore the tuning value
commit 5305ec6a27b2dc7398a689e661a4a2e951026f09 upstream. GLK firmware can indicate that the tuning value will be restored after runtime suspend, but not actually do that. Add a workaround that detects such cases, and lets the driver do re-tuning instead. Reported-by: NAnisse Astier <anisse@astier.eu> Tested-by: NAnisse Astier <anisse@astier.eu> Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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