usb: dwc3: qcom: fix gadget-only builds

A recent change added a dependency to the USB host stack and broke
gadget-only builds of the driver.

Fixes: 6895ea55c385 ("usb: dwc3: qcom: Configure wakeup interrupts during suspend")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220804151001.23612-4-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index be2e3dd..e936414 100644 (file)
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -310,8 +310,11 @@ static enum usb_device_speed dwc3_qcom_read_usb2_speed(struct dwc3_qcom *qcom)
         * currently supports only 1 port per controller. So
         * this is sufficient.
         */
+#ifdef CONFIG_USB
        udev = usb_hub_find_child(hcd->self.root_hub, 1);
-
+#else
+       udev = NULL;
+#endif
        if (!udev)
                return USB_SPEED_UNKNOWN;