mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433

Before enabling the clock, dwmmc exynos driver is trying to access the
register. Then the kernel panic can be occurred.

Change-Id: I99a859ab167307eede06dba52a15138424254fa1
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index d48df8b..8c9443d 100644 (file)
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -165,7 +165,7 @@ static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing)
 static int dw_mci_exynos_runtime_resume(struct device *dev)
 {
        struct dw_mci *host = dev_get_drvdata(dev);
-       int ret;
+       int ret = 0;
 
        ret = dw_mci_runtime_resume(dev);
        if (ret)