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mac80211: reduce number of __ieee80211_scan_completed calls

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Use goto instruction to call __ieee80211_scan_completed only ones in
ieee80211_scan_work. This is prepare for the next patch.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2010-10-06 11:22:08 +02:00 • committed by John W. Linville
parent 78159788e1
commit 259b62e35b
1 changed files with 31 additions and 24 deletions
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55
net/mac80211/scan.c
View file

@ -651,27 +651,25 @@ void ieee80211_scan_work(struct work_struct *work)
container_of(work, struct ieee80211_local, scan_work.work);
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
unsigned long next_delay = 0;
if (test_and_clear_bit(SCAN_COMPLETED, &local->scanning)) {
bool aborted;
aborted = test_and_clear_bit(SCAN_ABORTED, &local->scanning);
__ieee80211_scan_completed(&local->hw, aborted);
return;
}
bool aborted;
mutex_lock(&local->mtx);
if (!sdata || !local->scan_req) {
mutex_unlock(&local->mtx);
return;
if (test_and_clear_bit(SCAN_COMPLETED, &local->scanning)) {
aborted = test_and_clear_bit(SCAN_ABORTED, &local->scanning);
goto out_complete;
}
if (!sdata || !local->scan_req)
goto out;
if (local->hw_scan_req) {
int rc = drv_hw_scan(local, sdata, local->hw_scan_req);
mutex_unlock(&local->mtx);
if (rc)
__ieee80211_scan_completed(&local->hw, true);
return;
if (rc) {
aborted = true;
goto out_complete;
} else
goto out;
}
if (local->scan_req && !local->scanning) {
@ -682,23 +680,23 @@ void ieee80211_scan_work(struct work_struct *work)
local->scan_sdata = NULL;
rc = __ieee80211_start_scan(sdata, req);
mutex_unlock(&local->mtx);
if (rc)
__ieee80211_scan_completed(&local->hw, true);
return;
if (rc) {
aborted = true;
goto out_complete;
} else
goto out;
}
mutex_unlock(&local->mtx);
/*
* Avoid re-scheduling when the sdata is going away.
*/
if (!ieee80211_sdata_running(sdata)) {
__ieee80211_scan_completed(&local->hw, true);
return;
aborted = true;
goto out_complete;
}
mutex_unlock(&local->mtx);
/*
* as long as no delay is required advance immediately
* without scheduling a new work
@ -725,6 +723,15 @@ void ieee80211_scan_work(struct work_struct *work)
} while (next_delay == 0);
ieee80211_queue_delayed_work(&local->hw, &local->scan_work, next_delay);
return;
out_complete:
mutex_unlock(&local->mtx);
__ieee80211_scan_completed(&local->hw, aborted);
return;
out:
mutex_unlock(&local->mtx);
}
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,