On 7/19/23 23:20, Jonas Karlman wrote:
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.

Change to use the more relaxed regulator_set_enable_if_allowed to
continue if regulator already was enabled or disabled.

Sigh, can you please send series per-subsystem, so respective maintainers can pick the whole series relevant to the subsystem ? If it wasn't for Tom, I would've missed this patch entirely, since I only saw 1/5 which was some ADC patch I have no interest in.

diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
index 9818f9be94e0..637eb2dd06f5 100644
--- a/drivers/usb/host/dwc2.c
+++ b/drivers/usb/host/dwc2.c
@@ -194,8 +194,8 @@ static int dwc_vbus_supply_init(struct udevice *dev)
                return 0;
        }
- ret = regulator_set_enable(priv->vbus_supply, true);
-       if (ret) {
+       ret = regulator_set_enable_if_allowed(priv->vbus_supply, true);
+       if (ret && ret != -ENOSYS) {
                dev_err(dev, "Error enabling vbus supply\n");
                return ret;
        }
@@ -208,12 +208,10 @@ static int dwc_vbus_supply_exit(struct udevice *dev)
        struct dwc2_priv *priv = dev_get_priv(dev);
        int ret;
- if (priv->vbus_supply) {
-               ret = regulator_set_enable(priv->vbus_supply, false);
-               if (ret) {
-                       dev_err(dev, "Error disabling vbus supply\n");
-                       return ret;
-               }
+       ret = regulator_set_enable_if_allowed(priv->vbus_supply, false);
+       if (ret && ret != -ENOSYS) {

Is this going to work if priv->vbus_supply is NULL ?
(I think it won't work, so you need to re-add the check)

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