mmc: davinci_mmc: Handle error for clk_enable

As the potential failure of the clk_enable(),
it should be better to check it and return error
if fails.

Fixes: bbce5802afc5 ("davinci: mmc: updates to suspend/resume implementation")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220308071415.1093393-1-jiasheng@iscas.ac.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 0cf646ec9a80f34aeea6943c44bf86a7d3e12dc6..7138dfa065bfa64509a0fda5fa24d5e8f16b8cd7 100644 (file)
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -1373,8 +1373,12 @@ static int davinci_mmcsd_suspend(struct device *dev)
 static int davinci_mmcsd_resume(struct device *dev)
 {
        struct mmc_davinci_host *host = dev_get_drvdata(dev);
+       int ret;
+
+       ret = clk_enable(host->clk);
+       if (ret)
+               return ret;
 
-       clk_enable(host->clk);
        mmc_davinci_reset_ctrl(host, 0);
 
        return 0;