ath: change logging functions to return void

The return values are not used by callers of these functions
so change the functions to return void.

Other miscellanea:

o add __printf verification to wil6210 logging functions
  No format/argument mismatches found

Acked-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/wil6210/debug.c b/drivers/net/wireless/ath/wil6210/debug.c
index 9eeabf4..7a925ac 100644
--- a/drivers/net/wireless/ath/wil6210/debug.c
+++ b/drivers/net/wireless/ath/wil6210/debug.c
@@ -17,40 +17,34 @@
 #include "wil6210.h"
 #include "trace.h"
 
-int wil_err(struct wil6210_priv *wil, const char *fmt, ...)
+void wil_err(struct wil6210_priv *wil, const char *fmt, ...)
 {
 	struct net_device *ndev = wil_to_ndev(wil);
 	struct va_format vaf = {
 		.fmt = fmt,
 	};
 	va_list args;
-	int ret;
 
 	va_start(args, fmt);
 	vaf.va = &args;
-	ret = netdev_err(ndev, "%pV", &vaf);
+	netdev_err(ndev, "%pV", &vaf);
 	trace_wil6210_log_err(&vaf);
 	va_end(args);
-
-	return ret;
 }
 
-int wil_info(struct wil6210_priv *wil, const char *fmt, ...)
+void wil_info(struct wil6210_priv *wil, const char *fmt, ...)
 {
 	struct net_device *ndev = wil_to_ndev(wil);
 	struct va_format vaf = {
 		.fmt = fmt,
 	};
 	va_list args;
-	int ret;
 
 	va_start(args, fmt);
 	vaf.va = &args;
-	ret = netdev_info(ndev, "%pV", &vaf);
+	netdev_info(ndev, "%pV", &vaf);
 	trace_wil6210_log_info(&vaf);
 	va_end(args);
-
-	return ret;
 }
 
 int wil_dbg_trace(struct wil6210_priv *wil, const char *fmt, ...)
diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h
index f8718fe..1300b55 100644
--- a/drivers/net/wireless/ath/wil6210/wil6210.h
+++ b/drivers/net/wireless/ath/wil6210/wil6210.h
@@ -436,9 +436,12 @@
 #define wil_to_ndev(i) (wil_to_wdev(i)->netdev)
 #define ndev_to_wil(n) (wdev_to_wil(n->ieee80211_ptr))
 
+__printf(2, 3)
 int wil_dbg_trace(struct wil6210_priv *wil, const char *fmt, ...);
-int wil_err(struct wil6210_priv *wil, const char *fmt, ...);
-int wil_info(struct wil6210_priv *wil, const char *fmt, ...);
+__printf(2, 3)
+void wil_err(struct wil6210_priv *wil, const char *fmt, ...);
+__printf(2, 3)
+void wil_info(struct wil6210_priv *wil, const char *fmt, ...);
 #define wil_dbg(wil, fmt, arg...) do { \
 	netdev_dbg(wil_to_ndev(wil), fmt, ##arg); \
 	wil_dbg_trace(wil, fmt, ##arg); \