1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 98cfbb6d2369..4653deada05b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -1765,6 +1765,7 @@ int iwl_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 {
         struct iwl_priv *priv = hw->priv;
         struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
+        struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
         struct iwl_rxon_context *tmp;
         u32 interface_modes;
         int err;
@@ -1789,6 +1790,19 @@ int iwl_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                 goto out;
         }
 
+        /*
+         * Refuse a change that should be done by moving from the PAN
+         * context to the BSS context instead, if the BSS context is
+         * available and can support the new interface type.
+         */
+        if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
+            (bss_ctx->interface_modes & BIT(newtype) ||
+             bss_ctx->exclusive_interface_modes & BIT(newtype))) {
+                BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
+                err = -EBUSY;
+                goto out;
+        }
+
         if (ctx->exclusive_interface_modes & BIT(newtype)) {
                 for_each_context(priv, tmp) {
                         if (ctx == tmp)