nl80211: always accept scan request with the duration set

Accept a scan request with the duration set even if the driver
does not support setting the scan dwell. The duration can be used
as a hint to the driver, but the driver may use its internal logic
for setting the scan dwell.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201129172929.9491a12f9226.Ia9c5b24fcefc5ce5592537507243391633a27e5f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8e7320a..4a7ef3b 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8243,12 +8243,6 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
        }
 
        if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
-               if (!wiphy_ext_feature_isset(wiphy,
-                                       NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
-                       err = -EOPNOTSUPP;
-                       goto out_free;
-               }
-
                request->duration =
                        nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
                request->duration_mandatory =