From: Thomas Pedersen <thomas@cozybit.com>
Date: Mon, 4 Feb 2013 22:12:41 +0000 (-0800)
Subject: mac80211: stop plink timer only on mesh interfaces
X-Git-Tag: firefly_0821_release~3680^2~921^2~28^2^2~26^2~79
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=aa5a1b8e68c95151fd249a3b5ec444c6b0aa2f1c;p=firefly-linux-kernel-4.4.55.git

mac80211: stop plink timer only on mesh interfaces

Since mesh_plink_quiesce() would unconditionally delete
the plink timer, and the timer initialization was recently
moved into the mesh code path, suspending with a non-mesh
interface now causes a crash. Fix this by only deleting
the plink timer for mesh interfaces.

Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Tested-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index fe7c3334d6fe..67524e7d2548 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -592,6 +592,9 @@ static void mesh_plink_timer(unsigned long data)
 #ifdef CONFIG_PM
 void mesh_plink_quiesce(struct sta_info *sta)
 {
+	if (!ieee80211_vif_is_mesh(&sta->sdata->vif))
+		return;
+
 	if (del_timer_sync(&sta->plink_timer))
 		sta->plink_timer_was_running = true;
 }