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regulator: core: resolve supply for boot-on/always-on regulators

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For the boot-on/always-on regulators the set_machine_constrainst() is
called before resolving rdev->supply. Thus the code would try to enable
rdev before enabling supplying regulator. Enforce resolving supply
regulator before enabling rdev.

Fixes: aea6cb9970 ("regulator: resolve supply after creating regulator")
Signed-off-by: Dmitry Baryshkov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
Dmitry Baryshkov authored and Mark Brown committed 2021-05-20 22:00:11 +01:00
1 parent 855bfff9d6
commit 98e48cd928
1 file changed
+6
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drivers/regulator/core.c
+6
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@@ -1425,6 +1425,12 @@ static int set_machine_constraints(struct regulator_dev *rdev)
* and we have control then make sure it is enabled.
*/
if (rdev->constraints->always_on || rdev->constraints->boot_on) {
/* If we want to enable this regulator, make sure that we know
* the supplying regulator.
*/
if (rdev->supply_name && !rdev->supply)
return -EPROBE_DEFER;
if (rdev->supply) {
ret = regulator_enable(rdev->supply);
if (ret < 0) {