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authorJohannes Berg <johannes.berg@intel.com>2014-04-30 14:19:04 +0200
committerJohannes Berg <johannes.berg@intel.com>2014-05-09 12:21:34 +0200
commitf6837ba8c98afcf28ec25f6863a8597274aeefd6 (patch)
tree25e045970c4161b73457e42ded044dd908e81c6c /net/wireless/core.c
parentf29f58a9e53252a50eaea0ece59f1af5fad56b5f (diff)
downloadop-kernel-dev-f6837ba8c98afcf28ec25f6863a8597274aeefd6.zip
op-kernel-dev-f6837ba8c98afcf28ec25f6863a8597274aeefd6.tar.gz
mac80211: handle failed restart/resume better
When the driver fails during HW restart or resume, the whole stack goes into a very confused state with interfaces being up while the hardware is down etc. Address this by shutting down everything; we'll run into a lot of warnings in the process but that's better than having the whole stack get messed up. Reviewed-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/core.c')
-rw-r--r--net/wireless/core.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 7e023b7..3978871 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -210,15 +210,12 @@ void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
}
}
-static int cfg80211_rfkill_set_block(void *data, bool blocked)
+void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
{
- struct cfg80211_registered_device *rdev = data;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct wireless_dev *wdev;
- if (!blocked)
- return 0;
-
- rtnl_lock();
+ ASSERT_RTNL();
list_for_each_entry(wdev, &rdev->wdev_list, list) {
if (wdev->netdev) {
@@ -234,7 +231,18 @@ static int cfg80211_rfkill_set_block(void *data, bool blocked)
break;
}
}
+}
+EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces);
+static int cfg80211_rfkill_set_block(void *data, bool blocked)
+{
+ struct cfg80211_registered_device *rdev = data;
+
+ if (!blocked)
+ return 0;
+
+ rtnl_lock();
+ cfg80211_shutdown_all_interfaces(&rdev->wiphy);
rtnl_unlock();
return 0;
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