wifi: cfg80211: use system_unbound_wq for wiphy work

commit 91d20ab9d9ca035527af503d00e1e30d6c375f2a upstream.

Since wiphy work items can run pretty much arbitrary
code in the stack/driver, it can take longer to run
all of this, so we shouldn't be using system_wq via
schedule_work(). Also, we lock the wiphy (which is
the reason this exists), so use system_unbound_wq.

Reported-and-tested-by: Kalle Valo <kvalo@kernel.org>
Fixes: a3ee4dc84c4e ("wifi: cfg80211: add a work abstraction with special semantics")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/wireless/core.c b/net/wireless/core.c
index 2c79604672062f53ebb9c839d777120570817532..bf2f1f583fb12a56c991fce1a99745d9cb8472d7 100644 (file)
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -1618,7 +1618,7 @@ void wiphy_work_queue(struct wiphy *wiphy, struct wiphy_work *work)
                list_add_tail(&work->entry, &rdev->wiphy_work_list);
        spin_unlock_irqrestore(&rdev->wiphy_work_lock, flags);
 
-       schedule_work(&rdev->wiphy_work);
+       queue_work(system_unbound_wq, &rdev->wiphy_work);
 }
 EXPORT_SYMBOL_GPL(wiphy_work_queue);