linux-kernel - [PATCH 3.12 097/170] mac80211: don't check netdev state for debugfs read/write

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Message-Id: <3174f2792732ea8528fffbbb42cd4d5ca484be31.1405685481.git.jslaby@suse.cz>
Date:	Fri, 18 Jul 2014 14:11:42 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Arik Nemtsov <arik@...ery.com>,
	Arik Nemtsov <arikx.nemtsov@...el.com>,
	Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	Johannes Berg <johannes.berg@...el.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 097/170] mac80211: don't check netdev state for debugfs read/write

From: Arik Nemtsov <arik@...ery.com>

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

===============

commit 923eaf367206e01f22c97aee22300e332d071916 upstream.

Doing so will lead to an oops for a p2p-dev interface, since it has
no netdev.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@...el.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@...el.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 net/mac80211/debugfs_netdev.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index cafe614ef93d..8e41f0163c5a 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -34,8 +34,7 @@ static ssize_t ieee80211_if_read(
 	ssize_t ret = -EINVAL;
 
 	read_lock(&dev_base_lock);
-	if (sdata->dev->reg_state == NETREG_REGISTERED)
-		ret = (*format)(sdata, buf, sizeof(buf));
+	ret = (*format)(sdata, buf, sizeof(buf));
 	read_unlock(&dev_base_lock);
 
 	if (ret >= 0)
@@ -62,8 +61,7 @@ static ssize_t ieee80211_if_write(
 
 	ret = -ENODEV;
 	rtnl_lock();
-	if (sdata->dev->reg_state == NETREG_REGISTERED)
-		ret = (*write)(sdata, buf, count);
+	ret = (*write)(sdata, buf, count);
 	rtnl_unlock();
 
 	return ret;
-- 
2.0.0

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