[PATCH 2/4] usb: dwc2: fix build issue when config is USB_DWC2_HOST only

[Amelie Delaunay <amelie.delaunay@st.com>]

This patch add missing definition of dwc2_hsotg_core_disconnect and
check configuration before using hsotg->test_mode, to fix build issue when
config USB_DWC2_PERIPHERAL or USB_DWC2_DUAL_ROLE are not set.

Fixes: bc0f0d4a5853 ("usb: dwc2: override PHY input signals with usb role switch support")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 drivers/usb/dwc2/core.h | 1 +
 drivers/usb/dwc2/drd.c  | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 33e790ccefb3..7161344c6522 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -1425,6 +1425,7 @@ static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg)
 { return 0; }
 static inline void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2,
 						     bool reset) {}
+static inline void dwc2_hsotg_core_disconnect(struct dwc2_hsotg *hsotg) {}
 static inline void dwc2_hsotg_core_connect(struct dwc2_hsotg *hsotg) {}
 static inline void dwc2_hsotg_disconnect(struct dwc2_hsotg *dwc2) {}
 static inline int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg,
diff --git a/drivers/usb/dwc2/drd.c b/drivers/usb/dwc2/drd.c
index 032efffa37ab..5099841b1417 100644
--- a/drivers/usb/dwc2/drd.c
+++ b/drivers/usb/dwc2/drd.c
@@ -76,11 +76,14 @@ static int dwc2_drd_role_sw_set(struct usb_role_switch *sw, enum usb_role role)
 	    (role == USB_ROLE_HOST && hsotg->dr_mode == USB_DR_MODE_PERIPHERAL))
 		return -EINVAL;
 
+#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
+	IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
 	/* Skip session if core is in test mode */
 	if (role == USB_ROLE_NONE && hsotg->test_mode) {
 		dev_dbg(hsotg->dev, "Core is in test mode\n");
 		return -EBUSY;
 	}
+#endif
 
 	spin_lock_irqsave(&hsotg->lock, flags);
 
-- 
2.17.1