iwlegacy: fix IBSS mode crashes

[pandora-kernel.git] / drivers / net / wireless / iwlegacy / iwl-core.c

diff --git a/drivers/net/wireless/iwlegacy/iwl-core.c b/drivers/net/wireless/iwlegacy/iwl-core.c
index 2b08efb..dcbb2ef 100644 (file)
--- a/drivers/net/wireless/iwlegacy/iwl-core.c
+++ b/drivers/net/wireless/iwlegacy/iwl-core.c
@@ -2155,6 +2155,13 @@ int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed)
                        goto set_ch_out;
                }
 
+               if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
+                   !iwl_legacy_is_channel_ibss(ch_info)) {
+                       IWL_DEBUG_MAC80211(priv, "leave - not IBSS channel\n");
+                       ret = -EINVAL;
+                       goto set_ch_out;
+               }
+
                spin_lock_irqsave(&priv->lock, flags);
 
                for_each_context(priv, ctx) {