Commit cd0cfdd2 authored by Mark Brown's avatar Mark Brown Committed by Ulf Hansson
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mmc: sdhci-s3c: Check if clk_set_rate() succeeds 



It is possible that we may fail to set the clock rate, if we do so then
log the failure and don't bother reprogramming the IP.

Signed-off-by: default avatarMark Brown <broonie@linaro.org>
Acked-by: default avatarJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent ae552ab0

drivers/mmc/host/sdhci-s3c.c

+7 −1
Original line number Diff line number Diff line
@@ -300,6 +300,7 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock) 
	struct device *dev = &ourhost->pdev->dev;

	unsigned long timeout;

	u16 clk = 0;

	int ret;



	host->mmc->actual_clock = 0;
@@ -311,7 +312,12 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock) 


	sdhci_s3c_set_clock(host, clock);



	clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);

	ret = clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);

	if (ret != 0) {

		dev_err(dev, "%s: failed to set clock rate %uHz\n",

			mmc_hostname(host->mmc), clock);

		return;

	}



	clk = SDHCI_CLOCK_INT_EN;

	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);