diff --git a/drivers/usb/cdns3/host-export.h b/drivers/usb/cdns3/host-export.h
index fb8541b8adbce94bf161157d51eefda8d4f30a1a..cf92173ecf0083a7c1e6030f843af39e0f2a2b65 100644
--- a/drivers/usb/cdns3/host-export.h
+++ b/drivers/usb/cdns3/host-export.h
@@ -9,12 +9,9 @@
 #ifndef __LINUX_CDNS3_HOST_EXPORT
 #define __LINUX_CDNS3_HOST_EXPORT
 
-struct usb_hcd;
-
 #if IS_ENABLED(CONFIG_USB_CDNS_HOST)
 
 int cdns_host_init(struct cdns *cdns);
-int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd);
 
 #else
 
@@ -24,10 +21,6 @@ static inline int cdns_host_init(struct cdns *cdns)
 }
 
 static inline void cdns_host_exit(struct cdns *cdns) { }
-static inline int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
-{
-	return 0;
-}
 
 #endif /* USB_CDNS_HOST */
 
diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c
index 3ff19182b0c0a7299442ccfd2e9287bac88da9e5..84dadfa726aa6a816283b610ff258e0d2b53990a 100644
--- a/drivers/usb/cdns3/host.c
+++ b/drivers/usb/cdns3/host.c
@@ -23,6 +23,8 @@
 #define CFG_RXDET_P3_EN		BIT(15)
 #define LPM_2_STB_SWITCH_EN	BIT(25)
 
+static int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd);
+
 static const struct xhci_plat_priv xhci_plat_cdns3_xhci = {
 	.quirks = XHCI_SKIP_PHY_INIT | XHCI_AVOID_BEI,
 	.suspend_quirk = xhci_cdns3_suspend_quirk,
@@ -87,7 +89,7 @@ static int __cdns_host_init(struct cdns *cdns)
 	return ret;
 }
 
-int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
+static int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
 {
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
 	u32 value;