HID: add compat support

Add compat option to hid code to allow loading of all modules on
systems which don't allow autoloading because of old userspace.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 15 insertions, 2 deletions

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 75cc1531dd84..60e44e6b86e6 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -790,10 +790,23 @@ dbg_hid(const char *fmt, ...)
         return 0;
 }
 #define dbg_hid_line dbg_hid
-#endif
+#endif /* HID_DEBUG */
 
 #define err_hid(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
                 __FILE__ , ## arg)
-#endif
+#endif /* HID_FF */
+
+#ifdef CONFIG_HID_COMPAT
+#define HID_COMPAT_LOAD_DRIVER(name)    \
+void hid_compat_##name(void) { }        \
+EXPORT_SYMBOL(hid_compat_##name)
+#else
+#define HID_COMPAT_LOAD_DRIVER(name)
+#endif /* HID_COMPAT */
+#define HID_COMPAT_CALL_DRIVER(name)    do {    \
+        extern void hid_compat_##name(void);    \
+        hid_compat_##name();                    \
+} while (0)
+
 #endif