linux-kernel - [PATCH 4.9 068/109] mac80211: dont try to sleep in rate_control_rate

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Message-Id: <20171207125642.559328081@linuxfoundation.org>
Date:   Thu,  7 Dec 2017 13:56:52 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        "Xiaolong Ye (via lkp-robot)" <xiaolong.ye@...el.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 068/109] mac80211: dont try to sleep in rate_control_rate_init()

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

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


[ Upstream commit 115865fa0826ed18ca04717cf72d0fe874c0fe7f ]

In my previous patch, I missed that rate_control_rate_init() is
called from some places that cannot sleep, so it cannot call
ieee80211_recalc_min_chandef(). Remove that call for now to fix
the context bug, we'll have to find a different way to fix the
minimum channel width issue.

Fixes: 96aa2e7cf126 ("mac80211: calculate min channel width correctly")
Reported-by: Xiaolong Ye (via lkp-robot) <xiaolong.ye@...el.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/mac80211/rate.c |    2 --
 1 file changed, 2 deletions(-)

--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -40,8 +40,6 @@ void rate_control_rate_init(struct sta_i
 
 	ieee80211_sta_set_rx_nss(sta);
 
-	ieee80211_recalc_min_chandef(sta->sdata);
-
 	if (!ref)
 		return;