This is a note to let you know that I've just added the patch titled
mac80211: call drv_get_tsf() in sleepable context
to the 3.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mac80211-call-drv_get_tsf-in-sleepable-context.patch
and it can be found in the queue-3.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 55fabefe3695241e6ccfa0cd4974f3fa497693dc Mon Sep 17 00:00:00 2001
From: Thomas Pedersen <[email protected]>
Date: Fri, 5 Oct 2012 17:57:39 -0700
Subject: mac80211: call drv_get_tsf() in sleepable context
From: Thomas Pedersen <[email protected]>
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 <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
net/mac80211/mesh_sync.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/net/mac80211/mesh_sync.c
+++ b/net/mac80211/mesh_sync.c
@@ -56,7 +56,6 @@ void mesh_sync_adjust_tbtt(struct ieee80
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 ieee80
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,
Patches currently in stable-queue which might be from [email protected] are
queue-3.6/mac80211-call-drv_get_tsf-in-sleepable-context.patch
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