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mac802154: add synchronization handling

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This patch adds synchronization handling in start and stop driver ops
calls. This patch is mostly grab from mac80211 which was introduced by
commit ea77f12f2c ("mac80211: remove
tasklet enable/disable"). This is to be sure that we don't run into same
issues.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2014-10-28 18:21:27 +01:00 committed by Marcel Holtmann
parent e363eca386
commit 538181a879
1 changed files with 7 additions and 0 deletions
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7
net/mac802154/driver-ops.h
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@ -30,6 +30,7 @@ static inline int drv_start(struct ieee802154_local *local)
might_sleep();
local->started = true;
smp_mb();
return local->ops->start(&local->hw);
}
@ -40,6 +41,12 @@ static inline void drv_stop(struct ieee802154_local *local)
local->ops->stop(&local->hw);
/* sync away all work on the tasklet before clearing started */
tasklet_disable(&local->tasklet);
tasklet_enable(&local->tasklet);
barrier();
local->started = false;
}