From: Dmitry Osipenko digetx@gmail.com
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@gmail.com Link: https://lore.kernel.org/r/20210523224243.13219-2-digetx@gmail.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/regulator/max77620-regulator.c | 7 +++++++ 1 file changed, 7 insertions(+)
--- a/drivers/regulator/max77620-regulator.c +++ b/drivers/regulator/max77620-regulator.c @@ -814,6 +814,13 @@ 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;