From: Eliad Peller <eliad@wizery.com>
Date: Thu, 20 Oct 2011 17:05:49 +0000 (+0200)
Subject: mac80211: fix remain_off_channel regression
X-Git-Tag: firefly_0821_release~7541^2~2325
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=632abf8b3f714da01daec2d43ffd9cd7b47f53a9;p=firefly-linux-kernel-4.4.55.git

mac80211: fix remain_off_channel regression

commit eaa7af2ae582c9a8c51b374c48d5970b748a5ce2 upstream.

The offchannel code is currently broken - we should
remain_off_channel if the work was started, and
the work's channel and channel_type are the same
as local->tmp_channel and local->tmp_channel_type.

However, if wk->chan_type and local->tmp_channel_type
coexist (e.g. have the same channel type), we won't
remain_off_channel.

This behavior was introduced by commit da2fd1f
("mac80211: Allow work items to use existing
channel type.")

Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index dc8ec05a8fc5..0199f979aa45 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -1060,8 +1060,8 @@ static void ieee80211_work_work(struct work_struct *work)
 			continue;
 		if (wk->chan != local->tmp_channel)
 			continue;
-		if (ieee80211_work_ct_coexists(wk->chan_type,
-					       local->tmp_channel_type))
+		if (!ieee80211_work_ct_coexists(wk->chan_type,
+						local->tmp_channel_type))
 			continue;
 		remain_off_channel = true;
 	}