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authorJohannes Berg <johannes@sipsolutions.net>2007-09-18 17:29:21 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:53:00 -0700
commit79010420cc3f78eab911598bfdd29c4b06a83e1f (patch)
treea9031164d7944f8aa90a455d297780b241f3d865 /net/netrom
parentea49c359f36d5b40bf033c45a08332cb73777aa2 (diff)
[PATCH] mac80211: fix virtual interface locking
Florian Lohoff noticed a bug in mac80211: when bringing the master interface down while other virtual interfaces are up we call dev_close() under a spinlock which is not allowed. This patch removes the sub_if_lock used by mac80211 in favour of using an RCU list. All list manipulations are already done under rtnl so are well protected against each other, and the read-side locks we took in the RX and TX code are already in RCU read-side critical sections. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Florian Lohoff <flo@rfc822.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Cc: Satyam Sharma <satyam@infradead.org> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/netrom')
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