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Subject[PATCH] regulator: Fix resume from suspend to idle
When resuming from idle with the new suspend mode configuration support
we go through the resume callbacks with a state of PM_SUSPEND_TO_IDLE
which we don't have regulator constraints for, causing an error:

dpm_run_callback(): regulator_resume_early+0x0/0x64 returns -22
PM: Device regulator.0 failed to resume early: error -22

Avoid this and similar errors by treating missing constraints as a noop.

See also commit 57a0dd187956ea04 ("regulator: Fix suspend to idle"),
which fixed the suspend part.

Signed-off-by: Geert Uytterhoeven <>
[hiding in brown paper bag]
No idea how I managed not to see this when testing 57a0dd187956ea04.

drivers/regulator/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index dd4708c58480d277..1fc0c0811da4e9f2 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -4310,7 +4310,7 @@ static int _regulator_resume_early(struct device *dev, void *data)

rstate = regulator_get_suspend_state(rdev, *state);
if (rstate == NULL)
- return -EINVAL;
+ return 0;


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