Patch "mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433" has been added to the 4.15-stable tree

Patch "mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433" has been added to the 4.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 4.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mmc-dw_mmc-exynos-fix-the-suspend-resume-issue-for-exynos5433.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


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

From: Jaehoon Chung <jh80.chung@samsung.com>

commit e22842dd64bf86753d3f2b6ea474d73fc1e6ca24 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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;
 }
 
 /**


Patches currently in stable-queue which might be from jh80.chung@samsung.com are

queue-4.15/mmc-dw_mmc-fix-the-dto-cto-timeout-overflow-calculation-for-32-bit-systems.patch
queue-4.15/mmc-dw_mmc-exynos-fix-the-suspend-resume-issue-for-exynos5433.patch
queue-4.15/mmc-dw_mmc-fix-falling-from-idmac-to-pio-mode-when-dw_mci_reset-occurs.patch