Patch "mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb" has been added to the 4.9-stable tree

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

mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb

to the 4.9-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-the-mmc-error-after-sleep-on-ls1046ardb.patch
and it can be found in the queue-4.9 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: Fri, 1 Dec 2017 15:09:34 +0800
Subject: mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb

From: yinbo.zhu <[email protected]>

commit f2bc600008bd6f7f5d0b6b56238d14f95cd454d2 upstream.

When system wakes up from sleep on ls1046ardb, the SD operation fails with mmc error messages since ESDHC_TB_EN bit couldn't be cleaned by eSDHC_SYSCTL[RSTA]. It's proper to clean this bit in esdhc_reset() rather than in probe.

---
 drivers/mmc/host/sdhci-of-esdhc.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

@@ -489,10 +489,18 @@ static void esdhc_pltfm_set_bus_width(st
 
 static void esdhc_reset(struct sdhci_host *host, u8 mask)
 {
+	u32 val;
+
 	sdhci_reset(host, mask);
 
 	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
 	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
+
+	if (mask & SDHCI_RESET_ALL) {
+		val = sdhci_readl(host, ESDHC_TBCTL);
+		val &= ~ESDHC_TB_EN;
+		sdhci_writel(host, val, ESDHC_TBCTL);
+	}
 }
 
 #ifdef CONFIG_PM_SLEEP

@@ -584,10 +592,6 @@ 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-4.9/mmc-sdhci-of-esdhc-fix-the-mmc-error-after-sleep-on-ls1046ardb.patch queue-4.9/mmc-sdhci-of-esdhc-fix-emmc-couldn-t-work-after-kexec.patch