Patch "mmc: mmc: correct the logic for setting HS400ES signal voltage" has been added to the 4.9-stable tree

Patch "mmc: mmc: correct the logic for setting HS400ES signal voltage" has been added to the 4.9-stable tree

[gregkh]

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

    mmc: mmc: correct the logic for setting HS400ES signal voltage

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-mmc-correct-the-logic-for-setting-hs400es-signal-voltage.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 <stable@vger.kernel.org> know about it.


>From 92ddd95919466de5d34f3cb43635da9a7f9ab814 Mon Sep 17 00:00:00 2001
From: Haibo Chen <haibo.chen@nxp.com>
Date: Tue, 8 Aug 2017 18:54:01 +0800
Subject: mmc: mmc: correct the logic for setting HS400ES signal voltage

From: Haibo Chen <haibo.chen@nxp.com>

commit 92ddd95919466de5d34f3cb43635da9a7f9ab814 upstream.

Change the default err value to -EINVAL, make sure the card only
has type EXT_CSD_CARD_TYPE_HS400_1_8V also do the signal voltage
setting when select hs400es mode.

Fixes: commit 1720d3545b77 ("mmc: core: switch to 1V8 or 1V2 for hs400es mode")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mmc/core/mmc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1258,7 +1258,7 @@ out_err:
 static int mmc_select_hs400es(struct mmc_card *card)
 {
 	struct mmc_host *host = card->host;
-	int err = 0;
+	int err = -EINVAL;
 	u8 val;
 
 	if (!(host->caps & MMC_CAP_8_BIT_DATA)) {


Patches currently in stable-queue which might be from haibo.chen@nxp.com are

queue-4.9/mmc-mmc-correct-the-logic-for-setting-hs400es-signal-voltage.patch