mmc: pxamci: prepare and unprepare the clocks

Add the clock prepare and unprepare call to the driver set_ios calls
phase. This will remove a warning once the PXA architecture is migrated
to the clock infrastructure.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/pxamci.c

@@ -474,7 +474,7 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		unsigned int clk = rate / ios->clock;
 
 		if (host->clkrt == CLKRT_OFF)
-			clk_enable(host->clk);
+			clk_prepare_enable(host->clk);
 
 		if (ios->clock == 26000000) {
 			/* to support 26MHz */
@@ -501,7 +501,7 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		pxamci_stop_clock(host);
 		if (host->clkrt != CLKRT_OFF) {
 			host->clkrt = CLKRT_OFF;
-			clk_disable(host->clk);
+			clk_disable_unprepare(host->clk);
 		}
 	}