[U-Boot] [PATCH] mmc: sdhci: assigned to current clock value for host->clock

[Jaehoon Chung]

There is no place where host->clock is assgined to any value.
If real clock is changed to mmc->clock, host->clock can be assigned to
mmc->clock. If card request to same clock value, it doesn't need to
call sdhci_set_clock() function.

Signed-off-by: Jaehoon Chung <jh80.chung at samsung.com>
---
 drivers/mmc/sdhci.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index d89e302..3f87a23 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -380,8 +380,10 @@ static void sdhci_set_ios(struct mmc *mmc)
 	if (host->set_control_reg)
 		host->set_control_reg(host);
 
-	if (mmc->clock != host->clock)
-		sdhci_set_clock(mmc, mmc->clock);
+	if (mmc->clock != host->clock) {
+		if (!sdhci_set_clock(mmc, mmc->clock))
+			host->clock = mmc->clock;
+	}
 
 	/* Set bus width */
 	ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
-- 
1.9.1