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ath9k: fix DFS detector synchronization 

some userspace programs (e.g. hostapd) need to set the regulatory domain
before selecting the operating channel. Synchronize DFS detector regardless of
the value of ah->curchan, to avoid situations where wireless scan can't be done
on some 5GHz sub-bands, because dfs_region is constantly UNSET.

Acked-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Timothy Redaelli <tredaelli@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Timothy Redaelli 2018-03-27 11:25:25 +03:00 committed by Kalle Valo
parent 44f98a9332
commit 4415d58c47
1 changed files with 5 additions and 4 deletions
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9
drivers/net/wireless/ath/ath9k/init.c
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@ -257,6 +257,11 @@ static void ath9k_reg_notifier(struct wiphy *wiphy,
ath_reg_notifier_apply(wiphy, request, reg);
/* synchronize DFS detector if regulatory domain changed */
if (sc->dfs_detector != NULL)
sc->dfs_detector->set_dfs_domain(sc->dfs_detector,
request->dfs_region);
/* Set tx power */
if (!ah->curchan)
return;
@ -267,10 +272,6 @@ static void ath9k_reg_notifier(struct wiphy *wiphy,
ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower,
sc->cur_chan->txpower,
&sc->cur_chan->cur_txpower);
/* synchronize DFS detector if regulatory domain changed */
if (sc->dfs_detector != NULL)
sc->dfs_detector->set_dfs_domain(sc->dfs_detector,
request->dfs_region);
ath9k_ps_restore(sc);
}