From adea283117225281ecf537171a06dd6e430bd8db Mon Sep 17 00:00:00 2001
From: Brian Norris <briannorris@chromium.org>
Date: Thu, 26 Aug 2021 12:40:17 -0700
Subject: [PATCH] regulator: core: resolve supply voltage deferral silently
Voltage-controlled regulators depend on their supply regulator for
retrieving their voltage, and so they might return -EPROBE_DEFER at this
stage. Our caller already attempts to resolve supplies and retry, so we
shouldn't be printing this error to logs.
Quiets log messages like this, on Rockchip RK3399 Gru/Kevin boards:
[ 1.033057] ppvar_bigcpu: failed to get the current voltage: -EPROBE_DEFER
...
[ 1.036735] ppvar_litcpu: failed to get the current voltage: -EPROBE_DEFER
...
[ 1.040366] ppvar_gpu: failed to get the current voltage: -EPROBE_DEFER
...
[ 1.044086] ppvar_centerlogic: failed to get the current voltage: -EPROBE_DEFER
Cc: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20210826124015.1.Iab79c6dd374ec48beac44be2fcddd165dd26476b@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
---
drivers/regulator/core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index ca6caba8a191a..85783fb3aadfb 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1151,9 +1151,10 @@ static int machine_constraints_voltage(struct regulator_dev *rdev,
}
if (current_uV < 0) {
- rdev_err(rdev,
- "failed to get the current voltage: %pe\n",
- ERR_PTR(current_uV));
+ if (current_uV != -EPROBE_DEFER)
+ rdev_err(rdev,
+ "failed to get the current voltage: %pe\n",
+ ERR_PTR(current_uV));
return current_uV;
}
--
2.30.2