usb: phy: make GPIOs optional for the generic phy

The use of GPIOs should be optional for the generic phy, otherwise
the Altera SOCFPGA platform at least is broken.

Fixes breakage caused by a combination of e9f2cefb0cd "usb: phy:
generic: migrate to gpio_desc" and 135b3c4304d "usb: dwc2: platform:
add generic PHY framework support".

Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index dd05254241fb25af82b0a5963f777711fedfe0ef..9a826ff319514a954b43cb04b926620d90b5852a 100644 (file)
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -218,10 +218,10 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop,
                        clk_rate = 0;
 
                needs_vcc = of_property_read_bool(node, "vcc-supply");
-               nop->gpiod_reset = devm_gpiod_get(dev, "reset-gpios");
+               nop->gpiod_reset = devm_gpiod_get_optional(dev, "reset-gpios");
                err = PTR_ERR(nop->gpiod_reset);
                if (!err) {
-                       nop->gpiod_vbus = devm_gpiod_get(dev,
+                       nop->gpiod_vbus = devm_gpiod_get_optional(dev,
                                                         "vbus-detect-gpio");
                        err = PTR_ERR(nop->gpiod_vbus);
                }