diff options
| author | Thomas Pedersen <thomas@cozybit.com> | 2012-10-05 17:57:39 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-28 10:56:18 -0700 |
| commit | 3ae3dacc90a358dc113b565ddb1f4560d68109b1 (patch) | |
| tree | 2ab979109a41a0c174d27ffcb2d3d6de9b650549 | |
| parent | 060672c399c00f09d8e238756c1853a4c870b48a (diff) | |
mac80211: call drv_get_tsf() in sleepable context
commit 55fabefe3695241e6ccfa0cd4974f3fa497693dc upstream.
The call to drv_get/set_tsf() was put on the workqueue to perform tsf
adjustments since that function might sleep. However it ended up inside
a spinlock, whose critical section must be atomic. Do tsf adjustment
outside the spinlock instead, and get rid of a warning.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/mac80211/mesh_sync.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c index accfa00ffcdf..a16b7b4b1e02 100644 --- a/net/mac80211/mesh_sync.c +++ b/net/mac80211/mesh_sync.c @@ -56,7 +56,6 @@ void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata) u64 tsfdelta; spin_lock_bh(&ifmsh->sync_offset_lock); - if (ifmsh->sync_offset_clockdrift_max < beacon_int_fraction) { msync_dbg(sdata, "TBTT : max clockdrift=%lld; adjusting\n", (long long) ifmsh->sync_offset_clockdrift_max); @@ -69,11 +68,11 @@ void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata) tsfdelta = -beacon_int_fraction; ifmsh->sync_offset_clockdrift_max -= beacon_int_fraction; } + spin_unlock_bh(&ifmsh->sync_offset_lock); tsf = drv_get_tsf(local, sdata); if (tsf != -1ULL) drv_set_tsf(local, sdata, tsf + tsfdelta); - spin_unlock_bh(&ifmsh->sync_offset_lock); } static void mesh_sync_offset_rx_bcn_presp(struct ieee80211_sub_if_data *sdata, |