This is a note to let you know that I've just added the patch titled
mmc: mxs-mmc: disable regulator on error and in the remove function
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-mxs-mmc-disable-regulator-on-error-and-in-the-re.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@xxxxxxxxxxxxxxx> know about it.
commit a806349c501d94cfe617c63981b2715999c82c7b
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date: Sat Oct 16 08:21:44 2021 +0200
mmc: mxs-mmc: disable regulator on error and in the remove function
[ Upstream commit ce5f6c2c9b0fcb4094f8e162cfd37fb4294204f7 ]
The 'reg_vmmc' regulator is enabled in the probe. It is never disabled.
Neither in the error handling path of the probe nor in the remove
function.
Register a devm_action to disable it when needed.
Fixes: 4dc5a79f1350 ("mmc: mxs-mmc: enable regulator for mmc slot")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Link: https://lore.kernel.org/r/4aadb3c97835f7b80f00819c3d549e6130384e67.1634365151.git.christophe.jaillet@xxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 7125687faf76a..d7601dc5e85dc 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -579,6 +579,11 @@ static const struct of_device_id mxs_mmc_dt_ids[] = {
};
MODULE_DEVICE_TABLE(of, mxs_mmc_dt_ids);
+static void mxs_mmc_regulator_disable(void *regulator)
+{
+ regulator_disable(regulator);
+}
+
static int mxs_mmc_probe(struct platform_device *pdev)
{
const struct of_device_id *of_id =
@@ -622,6 +627,11 @@ static int mxs_mmc_probe(struct platform_device *pdev)
"Failed to enable vmmc regulator: %d\n", ret);
goto out_mmc_free;
}
+
+ ret = devm_add_action_or_reset(&pdev->dev, mxs_mmc_regulator_disable,
+ reg_vmmc);
+ if (ret)
+ goto out_mmc_free;
}
ssp->clk = devm_clk_get(&pdev->dev, NULL);
