From e22842dd64bf86753d3f2b6ea474d73fc1e6ca24 Mon Sep 17 00:00:00 2001
From: Jaehoon Chung <jh80.chung@samsung.com>
Date: Fri, 9 Mar 2018 15:10:21 +0900
Subject: [PATCH] mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433
Git-commit: e22842dd64bf86753d3f2b6ea474d73fc1e6ca24
Patch-mainline: v4.16-rc7
References: bsc#1051510

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

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>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/mmc/host/dw_mmc-exynos.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -165,9 +165,15 @@ static void dw_mci_exynos_set_clksel_tim
 static int dw_mci_exynos_runtime_resume(struct device *dev)
 {
 	struct dw_mci *host = dev_get_drvdata(dev);
+	int ret;
+
+	ret = dw_mci_runtime_resume(dev);
+	if (ret)
+		return ret;
 
 	dw_mci_exynos_config_smu(host);
-	return dw_mci_runtime_resume(dev);
+
+	return ret;
 }
 
 /**