mac80211: allow scan to complete from any context
authorJohannes Berg <johannes.berg@intel.com>
Thu, 26 Aug 2010 11:30:26 +0000 (13:30 +0200)
committerJohn W. Linville <linville@tuxdriver.com>
Fri, 27 Aug 2010 17:27:06 +0000 (13:27 -0400)
commit8789d459bc5e837bf37d261453df96ef54018d7b
tree5dbcabe5807de84f9119ab3654b998fd65ac0a40
parent5f33c92d188add2a22ec524c03e0ab097e303d52
mac80211: allow scan to complete from any context

The ieee80211_scan_completed() function was a frequent
source of potential deadlocks, since it is called by
drivers but may call back into drivers, so drivers had
to make sure to call it without any locks held, which
frequently lead to more complex code in drivers. Avoid
that problem by allowing the function to be called in
any context, and queueing the actual work it does.
Also update the documentation for it to indicate this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
include/net/mac80211.h
net/mac80211/ieee80211_i.h
net/mac80211/scan.c