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usb: dwc3-generic: fix CONFIG_DM_REGULATOR-off case

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When DM_REGULATOR is disabled, all calls will return -ENOSYS. Account
for that so that targets like the IOT2050 will work again.

Fixes: de451d5d5b ("usb: dwc3-generic: support external vbus regulator")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
This commit is contained in:
Jan Kiszka 2024-08-08 10:51:33 +02:00 • committed by Marek Vasut
parent a404065479
commit c69ba5a4fe
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/dwc3/dwc3-generic.c
View file

@ -246,12 +246,12 @@ static int dwc3_generic_host_probe(struct udevice *dev)
return rc;
rc = device_get_supply_regulator(dev, "vbus-supply", &priv->vbus_supply);
if (rc)
if (rc && rc != -ENOSYS)
debug("%s: No vbus regulator found: %d\n", dev->name, rc);
/* Only returns an error if regulator is valid and failed to enable due to a driver issue */
/* Does not return an error if regulator is invalid - but does so when DM_REGULATOR is disabled */
rc = regulator_set_enable_if_allowed(priv->vbus_supply, true);
if (rc)
if (rc && rc != -ENOSYS)
return rc;
hccr = (struct xhci_hccr *)priv->gen_priv.base;