diff options
| author | Al Cooper <alcooperx@gmail.com> | 2016-02-10 15:25:39 -0500 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2016-02-29 11:03:13 +0100 |
| commit | 5eaa7476f93768e5c64449ba1268ba5b6a2c12e1 (patch) | |
| tree | d8ec02de4cacff021b67acdad2c59582ca732d3b /drivers/mmc/host | |
| parent | 5d9460d74ce5c1f5f92d016c6a9be8336ef3f350 (diff) | |
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>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index add9fdfd1d8f..fd9139947fa3 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2928,7 +2928,7 @@ int sdhci_add_host(struct sdhci_host *host) * SDHCI_QUIRK2_BROKEN_64_BIT_DMA must be left to the drivers to * implement. */ - if (sdhci_readl(host, SDHCI_CAPABILITIES) & SDHCI_CAN_64BIT) + if (caps[0] & SDHCI_CAN_64BIT) host->flags |= SDHCI_USE_64_BIT_DMA; if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { |