Patch "mmc: tmio: check mmc_regulator_get_supply return value" has been added to the 4.14-stable tree

Patch "mmc: tmio: check mmc_regulator_get_supply return value" has been added to the 4.14-stable tree

[gregkh]

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

    mmc: tmio: check mmc_regulator_get_supply return value

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-tmio-check-mmc_regulator_get_supply-return-value.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 <stable@vger.kernel.org> know about it.


>From foo@baz Wed Dec  6 18:04:41 CET 2017
From: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Date: Fri, 22 Sep 2017 12:22:17 +0100
Subject: mmc: tmio: check mmc_regulator_get_supply return value

From: Fabrizio Castro <fabrizio.castro@bp.renesas.com>


[ Upstream commit a3d95d1d4007b1fefd6d8b12db26fda05de05cfb ]

mmc_regulator_get_supply returns -EPROBE_DEFER if either vmmc or
vqmmc regulators had their probing deferred.
vqmmc regulator is needed by UHS to work properly, therefore this
patch checks the value returned by mmc_regulator_get_supply to
make sure we have a reference to both vmmc and vqmmc (if found in
the DT).

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/mmc/host/tmio_mmc_core.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1113,8 +1113,11 @@ static int tmio_mmc_init_ocr(struct tmio
 {
 	struct tmio_mmc_data *pdata = host->pdata;
 	struct mmc_host *mmc = host->mmc;
+	int err;
 
-	mmc_regulator_get_supply(mmc);
+	err = mmc_regulator_get_supply(mmc);
+	if (err)
+		return err;
 
 	/* use ocr_mask if no regulator */
 	if (!mmc->ocr_avail)


Patches currently in stable-queue which might be from fabrizio.castro@bp.renesas.com are

queue-4.14/mmc-tmio-check-mmc_regulator_get_supply-return-value.patch