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regulator: core: Fix resolve supply lookup issue

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[ Upstream commit 0debed5b11 ]

From Marek's log, the previous change modify the parent of rdev.
https://lore.kernel.org/all/58b92e75-f373-dae7-7031-8abd465bb874@samsung.com/

In 'regulator_resolve_supply', it uses the parent DT node of rdev as the
DT-lookup starting node. But the parent DT node may not exist. This will
cause the NULL supply issue.

This patch modify the parent of rdev back to the device that provides
from 'regulator_config' in 'regulator_register'.

Fixes: 8f3cbcd6b4 ("regulator: core: Use different devices for resource allocation and DT lookup")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1670981831-12583-1-git-send-email-u0084500@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
ChiYuan Huang 2022-12-14 09:37:11 +08:00 committed by Greg Kroah-Hartman
parent 077bff242c
commit 65a1a20caf
1 changed files with 1 additions and 1 deletions
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2
drivers/regulator/core.c
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@ -5534,7 +5534,7 @@ regulator_register(struct device *dev,
/* register with sysfs */
rdev->dev.class = &regulator_class;
rdev->dev.parent = dev;
rdev->dev.parent = config->dev;
dev_set_name(&rdev->dev, "regulator.%lu",
(unsigned long) atomic_inc_return(&regulator_no));
dev_set_drvdata(&rdev->dev, rdev);