Patch "mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec" has been added to the 4.14-stable tree

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

mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec

to the 4.14-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-sdhci-of-esdhc-fix-emmc-couldn-t-work-after-kexec.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: "yinbo.zhu" <[email protected]>
Date: Wed, 8 Nov 2017 17:09:50 +0800
Subject: mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec

From: yinbo.zhu <[email protected]>

commit 97618aca1440b5addc5c3d78659d3e176be23b80 upstream.

The bit eSDHC_TBCTL[TB_EN] couldn't be reset by eSDHC_SYSCTL[RSTA] which is used to reset for all. The driver should make sure it's cleared before card initialization, otherwise the initialization would fail.

---
 drivers/mmc/host/sdhci-of-esdhc.c |    4 ++++
 1 file changed, 4 insertions(+)

@@ -785,6 +785,10 @@ static void esdhc_init(struct platform_d
 	pltfm_host = sdhci_priv(host);
 	esdhc = sdhci_pltfm_priv(pltfm_host);
 
+	val = sdhci_readl(host, ESDHC_TBCTL);
+	val &= ~ESDHC_TB_EN;
+	sdhci_writel(host, val, ESDHC_TBCTL);
+
 	host_ver = sdhci_readw(host, SDHCI_HOST_VERSION);
 	esdhc->vendor_ver = (host_ver & SDHCI_VENDOR_VER_MASK) >>
 			     SDHCI_VENDOR_VER_SHIFT;

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/mmc-sdhci-of-esdhc-fix-the-mmc-error-after-sleep-on-ls1046ardb.patch queue-4.14/mmc-sdhci-of-esdhc-fix-emmc-couldn-t-work-after-kexec.patch