diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-08-20 22:02:20 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-08-28 22:40:25 +0400 |
| commit | 84f6a01ce05fa671f7745b6e041e698a2d1f1341 (patch) | |
| tree | 9d27eb23cf2c310b572193cbef290b6b84eb0259 /net | |
| parent | 5eb6ba83aa326e2f2cf9109d20df5d6a497b36bb (diff) | |
| download | linux-84f6a01ce05fa671f7745b6e041e698a2d1f1341.tar.xz | |
mac80211: fix configure_filter invocation after stop
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 1 | ||||
| -rw-r--r-- | net/mac80211/iface.c | 6 | ||||
| -rw-r--r-- | net/mac80211/pm.c | 13 | ||||
| -rw-r--r-- | net/mac80211/util.c | 10 |
4 files changed, 14 insertions, 16 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 455cc7ade9f5..fa930e01295f 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1086,6 +1086,7 @@ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, /* Suspend/resume and hw reconfiguration */ int ieee80211_reconfig(struct ieee80211_local *local); +void ieee80211_stop_device(struct ieee80211_local *local); #ifdef CONFIG_PM int __ieee80211_suspend(struct ieee80211_hw *hw); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index b161301056df..5940e69fa33c 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -552,11 +552,7 @@ static int ieee80211_stop(struct net_device *dev) ieee80211_recalc_ps(local, -1); if (local->open_count == 0) { - drv_stop(local); - - ieee80211_led_radio(local, false); - - flush_workqueue(local->workqueue); + ieee80211_stop_device(local); tasklet_disable(&local->tx_pending_tasklet); tasklet_disable(&local->tasklet); diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index a5d2f1fb4417..e535f1c988fe 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -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 */ diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 5eb306377c63..dd6564321369 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1007,6 +1007,16 @@ u32 ieee80211_sta_get_rates(struct ieee80211_local *local, return supp_rates; } +void ieee80211_stop_device(struct ieee80211_local *local) +{ + ieee80211_led_radio(local, false); + + cancel_work_sync(&local->reconfig_filter); + drv_stop(local); + + flush_workqueue(local->workqueue); +} + int ieee80211_reconfig(struct ieee80211_local *local) { struct ieee80211_hw *hw = &local->hw; |