[PATCH 3.18 06/22] usb: ehci-orion: fix probe for !GENERIC_PHY

[Greg Kroah-Hartman]

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jonas Gorski <jogo@xxxxxxxxxxx>

commit db1319e166c5e872c4be54eac4e47454133708cf upstream.

Commit d445913ce0ab7f ("usb: ehci-orion: add optional PHY support")
added support for optional phys, but devm_phy_optional_get returns
-ENOSYS if GENERIC_PHY is not enabled.

This causes probe failures, even when there are no phys specified:

[    1.443365] orion-ehci f1058000.usb: init f1058000.usb fail, -38
[    1.449403] orion-ehci: probe of f1058000.usb failed with error -38

Similar to dwc3, treat -ENOSYS as no phy.

Fixes: d445913ce0ab7f ("usb: ehci-orion: add optional PHY support")

Signed-off-by: Jonas Gorski <jogo@xxxxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/usb/host/ehci-orion.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -226,7 +226,8 @@ static int ehci_orion_drv_probe(struct p
 	priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
 	if (IS_ERR(priv->phy)) {
 		err = PTR_ERR(priv->phy);
-		goto err_phy_get;
+		if (err != -ENOSYS)
+			goto err_phy_get;
 	} else {
 		err = phy_init(priv->phy);
 		if (err)