video: pwm_backlight: use regulator_set_enable_if_allowed
With the commit 4fcba5d556b4 ("regulator: implement basic reference
counter") the return value of regulator_set_enable may be EALREADY or
EBUSY for fixed/gpio regulators and may be further expanded on all
regulators.
Change to use the more relaxed regulator_set_enable_if_allowed to
continue if regulator already was enabled or disabled.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/drivers/video/pwm_backlight.c b/drivers/video/pwm_backlight.c
index aa0e292..1c747d9 100644
--- a/drivers/video/pwm_backlight.c
+++ b/drivers/video/pwm_backlight.c
@@ -100,8 +100,8 @@
plat = dev_get_uclass_plat(priv->reg);
log_debug("Enable '%s', regulator '%s'/'%s'\n",
dev->name, priv->reg->name, plat->name);
- ret = regulator_set_enable(priv->reg, true);
- if (ret) {
+ ret = regulator_set_enable_if_allowed(priv->reg, true);
+ if (ret && ret != -ENOSYS) {
log_debug("Cannot enable regulator for PWM '%s'\n",
dev->name);
return log_ret(ret);
@@ -181,11 +181,10 @@
}
if (disable) {
dm_gpio_set_value(&priv->enable, 0);
- if (priv->reg) {
- ret = regulator_set_enable(priv->reg, false);
- if (ret)
- return log_ret(ret);
- }
+ ret = regulator_set_enable_if_allowed(priv->reg, false);
+ if (ret && ret != -ENOSYS)
+ return log_ret(ret);
+
priv->enabled = false;
}