mmc: sdhci: Allow CAPS check for SDHCI_CAN_64BIT to use overridden caps
authorAl Cooper <alcooperx@gmail.com>
Wed, 10 Feb 2016 20:25:39 +0000 (15:25 -0500)
committerUlf Hansson <ulf.hansson@linaro.org>
Mon, 29 Feb 2016 10:03:13 +0000 (11:03 +0100)
commit5eaa7476f93768e5c64449ba1268ba5b6a2c12e1
treed8ec02de4cacff021b67acdad2c59582ca732d3b
parent5d9460d74ce5c1f5f92d016c6a9be8336ef3f350
mmc: sdhci: Allow CAPS check for SDHCI_CAN_64BIT to use overridden caps

sdhci_add_host() allows the Host Controller Capability registers
to be supplied by the calling driver by using
SDHCI_QUIRK_MISSING_CAPS, but the check for the Capabilities bit
SDHCI_CAN_64BIT doesn't use the applied value and instead reads
the Host register directly. This change uses the supplied "caps"
register instead of reading the host register.

This change will allow a calling driver to simply clear the
SDHCI_CAN_64BIT bit in "caps" to handle some cases of
SDHCI_QUIRK2_BROKEN_64_BIT_DMA.

Signed-off-by: Al Cooper <alcooperx@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
drivers/mmc/host/sdhci.c