From: Fabio Estevam festevam@denx.de
Since commit 4fcba5d556b4 ("regulator: implement basic reference counter") the return value of regulator_set_enable() may be EALREADY or EBUSY for fixed/GPIO regulators.
Swict to using the more relaxed regulator_set_enable_if_allowed() to continue if regulator already was enabled or disabled.
This fixes the following error when running the 'ums' command:
=> ums 0 mmc 0 UMS: LUN 0, dev mmc 0, hwpart 0, sector 0x0, count 0xece000 Error enabling VBUS supply g_dnl_register: failed!, error: -114 g_dnl_register failed
Signed-off-by: Fabio Estevam festevam@denx.de --- drivers/usb/host/ehci-mxs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/ehci-mxs.c b/drivers/usb/host/ehci-mxs.c index 092c79fd4bc5..ddf7cc2d00a7 100644 --- a/drivers/usb/host/ehci-mxs.c +++ b/drivers/usb/host/ehci-mxs.c @@ -236,9 +236,9 @@ static int ehci_usb_probe(struct udevice *dev) debug("%s: No vbus supply\n", dev->name);
if (!ret && priv->vbus_supply) { - 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) { puts("Error enabling VBUS supply\n"); return ret; @@ -265,7 +265,7 @@ static int ehci_usb_remove(struct udevice *dev)
#if CONFIG_IS_ENABLED(DM_REGULATOR) if (priv->vbus_supply) { - ret = regulator_set_enable(priv->vbus_supply, false); + ret = regulator_set_enable_if_allowed(priv->vbus_supply, false); if (ret) { puts("Error disabling VBUS supply\n"); return ret;