include: convert various register fcns to macros to avoid include chaining

The original implementations reference THIS_MODULE in an inline.
We could include <linux/export.h>, but it is better to avoid chaining.

Fortunately someone else already thought of this, and made a similar
inline into a #define in <linux/device.h> for device_schedule_callback(),
[see commit 523ded71de0] so follow that precedent here.

Also bubble up any __must_check that were used on the prev. wrapper inline
functions up one to the real __register functions, to preserve any prev.
sanity checks that were used in those instances.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 85e78fc7d7fd..61f29f6a403d 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -723,10 +723,14 @@ extern int dev_set_drvdata(struct device *dev, void *data);
  */
 extern struct device *__root_device_register(const char *name,
                                              struct module *owner);
-static inline struct device *root_device_register(const char *name)
-{
-        return __root_device_register(name, THIS_MODULE);
-}
+
+/*
+ * This is a macro to avoid include problems with THIS_MODULE,
+ * just as per what is done for device_schedule_callback() above.
+ */
+#define root_device_register(name) \
+        __root_device_register(name, THIS_MODULE)
+
 extern void root_device_unregister(struct device *root);
 
 static inline void *dev_get_platdata(const struct device *dev)