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authorJohannes Berg <johannes.berg@intel.com>2012-06-15 20:00:00 +0400
committerJohannes Berg <johannes.berg@intel.com>2012-07-09 16:51:46 +0400
commitba22fb5b25db1e18692e2d01f8addb3fea0af813 (patch)
treec5e07f938160260f085c124b803067682e010840 /net/wireless/core.c
parent72fb2abcf5f985a72e0a30c214b7ed49afa6571b (diff)
downloadlinux-ba22fb5b25db1e18692e2d01f8addb3fea0af813.tar.xz
nl80211: don't assume wdev->netdev exists
There are a few places that iterate the wdev list and assume wdev->netdev exists, check there. The rfkill one has to be extended for each non-netdev type later. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/core.c')
-rw-r--r--net/wireless/core.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c
index b110a8a242db..2781a411cecc 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -177,6 +177,8 @@ int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
return -EOPNOTSUPP;
list_for_each_entry(wdev, &rdev->wdev_list, list) {
+ if (!wdev->netdev)
+ continue;
wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL;
err = dev_change_net_namespace(wdev->netdev, net, "wlan%d");
if (err)
@@ -190,6 +192,8 @@ int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
list_for_each_entry_continue_reverse(wdev, &rdev->wdev_list,
list) {
+ if (!wdev->netdev)
+ continue;
wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL;
err = dev_change_net_namespace(wdev->netdev, net,
"wlan%d");
@@ -227,7 +231,8 @@ static int cfg80211_rfkill_set_block(void *data, bool blocked)
mutex_lock(&rdev->devlist_mtx);
list_for_each_entry(wdev, &rdev->wdev_list, list)
- dev_close(wdev->netdev);
+ if (wdev->netdev)
+ dev_close(wdev->netdev);
mutex_unlock(&rdev->devlist_mtx);
rtnl_unlock();