mac80211: use __printf attribute in debugfs
The internal function mac80211_format_buffer() has a
printf-style argument list, so add the attribute to
have gcc verify that list.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/debugfs.h b/net/mac80211/debugfs.h
index 9be4e6d..214ed4e 100644
--- a/net/mac80211/debugfs.h
+++ b/net/mac80211/debugfs.h
@@ -2,9 +2,9 @@
#define __MAC80211_DEBUGFS_H
#ifdef CONFIG_MAC80211_DEBUGFS
-extern void debugfs_hw_add(struct ieee80211_local *local);
-extern int mac80211_format_buffer(char __user *userbuf, size_t count,
- loff_t *ppos, char *fmt, ...);
+void debugfs_hw_add(struct ieee80211_local *local);
+int __printf(4, 5) mac80211_format_buffer(char __user *userbuf, size_t count,
+ loff_t *ppos, char *fmt, ...);
#else
static inline void debugfs_hw_add(struct ieee80211_local *local)
{