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mac80211: allow driver to return error from sched_scan_stop

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In order to solve races with sched_scan_stop, it is necessary
for the driver to be able to return an error to propagate that
to cfg80211 so it doesn't send an event.

Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2014-02-17 10:48:17 +01:00
parent d9b8396a52
commit 37e3308cb2
5 changed files with 19 additions and 10 deletions
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12
net/mac80211/driver-ops.h
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@@ -354,16 +354,20 @@ drv_sched_scan_start(struct ieee80211_local *local,
return ret;
}
static inline void drv_sched_scan_stop(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
static inline int drv_sched_scan_stop(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
int ret;
might_sleep();
check_sdata_in_driver(sdata);
trace_drv_sched_scan_stop(local, sdata);
local->ops->sched_scan_stop(&local->hw, &sdata->vif);
trace_drv_return_void(local);
ret = local->ops->sched_scan_stop(&local->hw, &sdata->vif);
trace_drv_return_int(local, ret);
return ret;
}
static inline void drv_sw_scan_start(struct ieee80211_local *local)