usb: dual-role: make stub functions inline

If CONFIG_DUAL_ROLE_USB_INTF is disabled but the exported functions
are referenced, the build will result in warnings such as:

	In file included from include/linux/usb/class-dual-role.h:112:13:
	warning: ‘dual_role_instance_changed’ defined but not used
	[-Wunused-function]

These stub functions should be static inline.

Change-Id: I5a9ef58dca32306fac5a4c7f28cdaa36fa8ae078
Signed-off-by: Jack Pham <jackp@codeaurora.org>
(cherry picked from commit 2d152dbb0743526b21d6bbefe097f874c027f860)
(cherry picked from commit 8ad66cafaa10e6ba94ff79a8dbc2cc437c6bfe93)

diff --git a/include/linux/usb/class-dual-role.h b/include/linux/usb/class-dual-role.h
index af42ed34944a85d02ae0770563e11e27ffa36240..c6df2238012e4b95fa0f8e5bd43cbfe1d8ea8504 100644 (file)
--- a/include/linux/usb/class-dual-role.h
+++ b/include/linux/usb/class-dual-role.h
@@ -109,18 +109,19 @@ extern int dual_role_property_is_writeable(struct dual_role_phy_instance
                                           enum dual_role_property prop);
 extern void *dual_role_get_drvdata(struct dual_role_phy_instance *dual_role);
 #else /* CONFIG_DUAL_ROLE_USB_INTF */
-static void dual_role_instance_changed(struct dual_role_phy_instance
+static inline void dual_role_instance_changed(struct dual_role_phy_instance
                                       *dual_role){}
-static struct dual_role_phy_instance *__must_check
+static inline struct dual_role_phy_instance *__must_check
 devm_dual_role_instance_register(struct device *parent,
                                 const struct dual_role_phy_desc *desc)
 {
        return ERR_PTR(-ENOSYS);
 }
-static void devm_dual_role_instance_unregister(struct device *dev,
+static inline void devm_dual_role_instance_unregister(struct device *dev,
                                               struct dual_role_phy_instance
                                               *dual_role){}
-static void *dual_role_get_drvdata(struct dual_role_phy_instance *dual_role)
+static inline void *dual_role_get_drvdata(struct dual_role_phy_instance
+               *dual_role)
 {
        return ERR_PTR(-ENOSYS);
 }