[PATCH] regulator: Fix suspend to idle

From: Mark Brown
Date: Tue Jan 30 2018 - 07:16:31 EST


When suspending to idle with the new suspend mode configuration support
we go through the suspend callbacks with a state of PM_SUSPEND_TO_IDLE
which we don't have regulator constraints for, causing an error. Avoid
this and similar errors by treating missing constraints as a noop.

Reported-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
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 42681c10cbe4..dd4708c58480 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -758,7 +758,7 @@ static int suspend_set_state(struct regulator_dev *rdev,

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

/* If we have no suspend mode configration don't set anything;
* only warn if the driver implements set_suspend_voltage or
--
2.15.1