[4/5] batman-adv: fix warning in function batadv_v_elp_get_throughput

Message ID 20190328153127.19931-5-sw@simonwunderlich.de
State New
Headers show
Series
  • Untitled series #19568
Related show

Commit Message

Simon Wunderlich March 28, 2019, 3:31 p.m.
From: Anders Roxell <anders.roxell@linaro.org>


When CONFIG_CFG80211 isn't enabled the compiler correcly warns about
'sinfo.pertid' may be unused. It can also happen for other error
conditions that it not warn about.

net/batman-adv/bat_v_elp.c: In function ‘batadv_v_elp_get_throughput.isra.0’:
include/net/cfg80211.h:6370:13: warning: ‘sinfo.pertid’ may be used
 uninitialized in this function [-Wmaybe-uninitialized]
  kfree(sinfo->pertid);
        ~~~~~^~~~~~~~

Rework so that we only release '&sinfo' if cfg80211_get_station returns
zero.

Fixes: 7d652669b61d ("batman-adv: release station info tidstats")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>

Signed-off-by: Sven Eckelmann <sven@narfation.org>

Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

---
 net/batman-adv/bat_v_elp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

-- 
2.11.0

Patch

diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index a9b7919c9de5..d5df0114f08a 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -104,8 +104,10 @@  static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh)
 
 		ret = cfg80211_get_station(real_netdev, neigh->addr, &sinfo);
 
-		/* free the TID stats immediately */
-		cfg80211_sinfo_release_content(&sinfo);
+		if (!ret) {
+			/* free the TID stats immediately */
+			cfg80211_sinfo_release_content(&sinfo);
+		}
 
 		dev_put(real_netdev);
 		if (ret == -ENOENT) {