1 files changed, 9 insertions, 42 deletions

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 2d1d183ae6f0..f386981734a0 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1762,6 +1762,10 @@ static bool reg_same_country_ie_hint(struct wiphy *wiphy,
         return false;
 }
 
+/*
+ * We hold wdev_lock() here so we cannot hold cfg80211_mutex() and
+ * therefore cannot iterate over the rdev list here.
+ */
 void regulatory_hint_11d(struct wiphy *wiphy,
                         u8 *country_ie,
                         u8 country_ie_len)
@@ -1804,51 +1808,14 @@ void regulatory_hint_11d(struct wiphy *wiphy,
          * We will run this for *every* beacon processed for the BSSID, so
          * we optimize an early check to exit out early if we don't have to
          * do anything
+         *
+         * We leave conflict resolution to the workqueue, where can hold
+         * cfg80211_mutex.
          */
         if (likely(last_request->initiator ==
             NL80211_REGDOM_SET_BY_COUNTRY_IE &&
-            wiphy_idx_valid(last_request->wiphy_idx))) {
-                struct cfg80211_registered_device *rdev_last_ie;
-
-                rdev_last_ie =
-                        cfg80211_rdev_by_wiphy_idx(last_request->wiphy_idx);
-
-                /*
-                 * Lets keep this simple -- we trust the first AP
-                 * after we intersect with CRDA
-                 */
-                if (likely(&rdev_last_ie->wiphy == wiphy)) {
-                        /*
-                         * Ignore IEs coming in on this wiphy with
-                         * the same alpha2 and environment cap
-                         */
-                        if (likely(alpha2_equal(rdev_last_ie->country_ie_alpha2,
-                                  alpha2) &&
-                                  env == rdev_last_ie->env)) {
-                                goto out;
-                        }
-                        /*
-                         * the wiphy moved on to another BSSID or the AP
-                         * was reconfigured. XXX: We need to deal with the
-                         * case where the user suspends and goes to goes
-                         * to another country, and then gets IEs from an
-                         * AP with different settings
-                         */
-                        goto out;
-                } else {
-                        /*
-                         * Ignore IEs coming in on two separate wiphys with
-                         * the same alpha2 and environment cap
-                         */
-                        if (likely(alpha2_equal(rdev_last_ie->country_ie_alpha2,
-                                  alpha2) &&
-                                  env == rdev_last_ie->env)) {
-                                goto out;
-                        }
-                        /* We could potentially intersect though */
-                        goto out;
-                }
-        }
+            wiphy_idx_valid(last_request->wiphy_idx)))
+                goto out;
 
         rd = country_ie_2_rd(country_ie, country_ie_len, &checksum);
         if (!rd)