This is a note to let you know that I've just added the patch titled
regulator: max77620: Use device_set_of_node_from_dev()
to the 4.19-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:
regulator-max77620-use-device_set_of_node_from_dev.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6f55c5dd1118b3076d11d9cb17f5c5f4bc3a1162 Mon Sep 17 00:00:00 2001
From: Dmitry Osipenko <digetx@xxxxxxxxx>
Date: Mon, 24 May 2021 01:42:42 +0300
Subject: regulator: max77620: Use device_set_of_node_from_dev()
From: Dmitry Osipenko <digetx@xxxxxxxxx>
commit 6f55c5dd1118b3076d11d9cb17f5c5f4bc3a1162 upstream.
The MAX77620 driver fails to re-probe on deferred probe because driver
core tries to claim resources that are already claimed by the PINCTRL
device. Use device_set_of_node_from_dev() helper which marks OF node as
reused, skipping erroneous execution of pinctrl_bind_pins() for the PMIC
device on the re-probe.
Fixes: aea6cb99703e ("regulator: resolve supply after creating regulator")
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Link: https://lore.kernel.org/r/20210523224243.13219-2-digetx@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/regulator/max77620-regulator.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/regulator/max77620-regulator.c
+++ b/drivers/regulator/max77620-regulator.c
@@ -792,6 +792,13 @@ static int max77620_regulator_probe(stru
config.dev = dev;
config.driver_data = pmic;
+ /*
+ * Set of_node_reuse flag to prevent driver core from attempting to
+ * claim any pinmux resources already claimed by the parent device.
+ * Otherwise PMIC driver will fail to re-probe.
+ */
+ device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent);
+
for (id = 0; id < MAX77620_NUM_REGS; id++) {
struct regulator_dev *rdev;
struct regulator_desc *rdesc;
Patches currently in stable-queue which might be from digetx@xxxxxxxxx are
queue-4.19/regulator-max77620-use-device_set_of_node_from_dev.patch
