[PATCH AUTOSEL 4.19 78/87] cfg80211: Save the regulatory domain when setting custom regulatory

From: Sasha Levin
Date: Tue Dec 22 2020 - 21:44:49 EST


From: Ilan Peer <ilan.peer@xxxxxxxxx>

[ Upstream commit beee246951571cc5452176f3dbfe9aa5a10ba2b9 ]

When custom regulatory was set, only the channels setting was updated, but
the regulatory domain was not saved. Fix it by saving it.

Signed-off-by: Ilan Peer <ilan.peer@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.290fa5c5568a.Ic5732aa64de6ee97ae3578bd5779fc723ba489d1@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/wireless/reg.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index c7825b951f725..3427e6e4ce41c 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2332,6 +2332,7 @@ static void handle_band_custom(struct wiphy *wiphy,
void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
const struct ieee80211_regdomain *regd)
{
+ const struct ieee80211_regdomain *new_regd, *tmp;
enum nl80211_band band;
unsigned int bands_set = 0;

@@ -2351,6 +2352,13 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
* on your device's supported bands.
*/
WARN_ON(!bands_set);
+ new_regd = reg_copy_regd(regd);
+ if (IS_ERR(new_regd))
+ return;
+
+ tmp = get_wiphy_regdom(wiphy);
+ rcu_assign_pointer(wiphy->regd, new_regd);
+ rcu_free_regdom(tmp);
}
EXPORT_SYMBOL(wiphy_apply_custom_regulatory);

--
2.27.0