From: Arik Nemtsov <arik@wizery.com>
Date: Mon, 26 May 2014 11:40:51 +0000 (+0300)
Subject: mac80211: don't check netdev state for debugfs read/write
X-Git-Tag: v3.4.98~29
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dc0bfd69158e4eb64d8ca75ed382b5215f3461c1;p=platform%2Fkernel%2Flinux-stable.git

mac80211: don't check netdev state for debugfs read/write

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@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 30f99c3..d5404cc 100644
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -33,8 +33,7 @@ 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)
@@ -61,8 +60,7 @@ 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;