usb: ehci-mx6: 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.

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

Based on 335799b7252a ("usb: dwc2: Use regulator_set_enable_if_allowed")

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>

diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
index a93fa5d..a8748ce 100644 (file)
--- a/drivers/usb/host/ehci-mx6.c
+++ b/drivers/usb/host/ehci-mx6.c
@@ -479,9 +479,9 @@ static int mx6_init_after_reset(struct ehci_ctrl *dev)
 #if CONFIG_IS_ENABLED(DM_REGULATOR)
        if (priv->vbus_supply) {
                int ret;
-               ret = regulator_set_enable(priv->vbus_supply,
-                                          (type == USB_INIT_DEVICE) ?
-                                          false : true);
+               ret = regulator_set_enable_if_allowed(priv->vbus_supply,
+                                                     (type == USB_INIT_DEVICE) ?
+                                                     false : true);
                if (ret && ret != -ENOSYS) {
                        printf("Error enabling VBUS supply (ret=%i)\n", ret);
                        return ret;