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mac80211: fix configure_filter invocation after stop

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Since configure_filter can sleep now, any multicast
configuration needed to be postponed to a work struct.
This, however, lead to a problem that we could queue
the work, stop the device and then afterwards invoke
configure_filter which may lead to driver hangs and is
a bug. To fix this, we can just cancel the filter work
since it's unnecessary to do after stopping the hw.

Since there are various places that call drv_stop, and
two of them do very similar things, the code for them
can be put into a shared function at the same time.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Reported-by: Lennert Buytenhek <buytenh@wantstofly.org>
Tested-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-08-20 20:02:20 +02:00
committed by John W. Linville
parent 5eb6ba83aa
commit 84f6a01ce0
4 changed files with 14 additions and 16 deletions
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13
net/mac80211/pm.c
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@@ -107,17 +107,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
}
/* stop hardware - this must stop RX */
if (local->open_count) {
ieee80211_led_radio(local, false);
drv_stop(local);
}
/*
* flush again, in case driver queued work -- it
* shouldn't be doing (or cancel everything in the
* stop callback) that but better safe than sorry.
*/
flush_workqueue(local->workqueue);
if (local->open_count)
ieee80211_stop_device(local);
local->suspended = true;
/* need suspended to be visible before quiescing is false */