mmc: core: Clarify usage of mmc_set_signal_voltage()

The mmc_set_signal_voltage() function is used for SD/SDIO when switching to
1.8V for UHS mode. To clarify this let's do the following changes.

- We are always providing MMC_SIGNAL_VOLTAGE_180 as the signal_voltage
  parameter to the function. Then, let's just remove the parameter as it
  serves no purpose.
- Rename the function to mmc_set_uhs_voltage().

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 8b4f13943712..89531b48ae84 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -788,8 +788,7 @@ try_again:
          */
         if (!mmc_host_is_spi(host) && rocr &&
            ((*rocr & 0x41000000) == 0x41000000)) {
-                err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180,
-                                        pocr);
+                err = mmc_set_uhs_voltage(host, pocr);
                 if (err == -EAGAIN) {
                         retries--;
                         goto try_again;