[PATCH wireless-next] wifi: mac80211: remove ieee80211_sta_ps_transition() return value

[Johannes Berg <johannes@sipsolutions.net>]

From: Johannes Berg <johannes.berg@intel.com>

Nothing cares, so no point calculating it. Also simplify
the "no need to do anything" check and fix some docs that
should refer to this function instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/net/mac80211.h | 18 +++++-------------
 net/mac80211/rx.c      |  8 +++-----
 2 files changed, 8 insertions(+), 18 deletions(-)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9d1fac6e8082..638b8aa5214d 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -2919,8 +2919,8 @@ struct ieee80211_txq {
  *	autonomously manages the PS status of connected stations. When
  *	this flag is set mac80211 will not trigger PS mode for connected
  *	stations based on the PM bit of incoming frames.
- *	Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure
- *	the PS mode of connected stations.
+ *	Use ieee80211_sta_ps_transition() to manually toggle the PS mode
+ *	of connected stations.
  *
  * @IEEE80211_HW_TX_AMPDU_SETUP_IN_HW: The device handles TX A-MPDU session
  *	setup strictly in HW. mac80211 should not attempt to do this in
@@ -5499,10 +5499,8 @@ static inline void ieee80211_rx_ni(struct ieee80211_hw *hw,
  *
  * @sta: currently connected sta
  * @start: start or stop PS
- *
- * Return: 0 on success. -EINVAL when the requested PS mode is already set.
  */
-int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start);
+void ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start);
 
 /**
  * ieee80211_sta_ps_transition_ni - PS transition for connected sta
@@ -5514,19 +5512,13 @@ int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start);
  *
  * @sta: currently connected sta
  * @start: start or stop PS
- *
- * Return: Like ieee80211_sta_ps_transition().
  */
-static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta,
+static inline void ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta,
 						  bool start)
 {
-	int ret;
-
 	local_bh_disable();
-	ret = ieee80211_sta_ps_transition(sta, start);
+	ieee80211_sta_ps_transition(sta, start);
 	local_bh_enable();
-
-	return ret;
 }
 
 /**
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 5e26be8e27d8..40ed03a775ba 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1744,7 +1744,7 @@ static void sta_ps_end(struct sta_info *sta)
 	ieee80211_sta_ps_deliver_wakeup(sta);
 }
 
-int ieee80211_sta_ps_transition(struct ieee80211_sta *pubsta, bool start)
+void ieee80211_sta_ps_transition(struct ieee80211_sta *pubsta, bool start)
 {
 	struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
 	bool in_ps;
@@ -1753,15 +1753,13 @@ int ieee80211_sta_ps_transition(struct ieee80211_sta *pubsta, bool start)
 
 	/* Don't let the same PS state be set twice */
 	in_ps = test_sta_flag(sta, WLAN_STA_PS_STA);
-	if ((start && in_ps) || (!start && !in_ps))
-		return -EINVAL;
+	if (start == in_ps)
+		return;
 
 	if (start)
 		sta_ps_start(sta);
 	else
 		sta_ps_end(sta);
-
-	return 0;
 }
 EXPORT_SYMBOL(ieee80211_sta_ps_transition);
 
-- 
2.55.0