iwlwifi: avoid firmware command sending if rfkill is enabled

This patch fixed a ucode timeout issue and worked code with suspend
to disk.

Signed-off-by: Mohamed Abbas <mabbas@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 33 insertions, 21 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 3272608ced83..dbb6eff7b8e6 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2546,9 +2546,6 @@ static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
 
 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
 {
-        if (!iwl3945_is_ready_rf(priv))
-                return -EAGAIN;
-
         if (mode == IEEE80211_IF_TYPE_IBSS) {
                 const struct iwl3945_channel_info *ch_info;
 
@@ -2563,13 +2560,6 @@ static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
                 }
         }
 
-        cancel_delayed_work(&priv->scan_check);
-        if (iwl3945_scan_cancel_timeout(priv, 100)) {
-                IWL_WARNING("Aborted scan still in progress after 100ms\n");
-                IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
-                return -EAGAIN;
-        }
-
         priv->iw_mode = mode;
 
         iwl3945_connection_init_rx_config(priv);
@@ -2577,6 +2567,17 @@ static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
 
         iwl3945_clear_stations_table(priv);
 
+        /* dont commit rxon if rf-kill is on*/
+        if (!iwl3945_is_ready_rf(priv))
+                return -EAGAIN;
+
+        cancel_delayed_work(&priv->scan_check);
+        if (iwl3945_scan_cancel_timeout(priv, 100)) {
+                IWL_WARNING("Aborted scan still in progress after 100ms\n");
+                IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
+                return -EAGAIN;
+        }
+
         iwl3945_commit_rxon(priv);
 
         return 0;
@@ -7020,6 +7021,12 @@ static void iwl3945_mac_stop(struct ieee80211_hw *hw)
          * RXON_FILTER_ASSOC_MSK BIT
          */
         priv->is_open = 0;
+        if (!iwl3945_is_ready_rf(priv)) {
+                IWL_DEBUG_MAC80211("leave - RF not ready\n");
+                mutex_unlock(&priv->mutex);
+                return;
+        }
+
         iwl3945_scan_cancel_timeout(priv, 100);
         cancel_delayed_work(&priv->post_associate);
         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
@@ -7291,6 +7298,9 @@ static int iwl3945_mac_config_interface(struct ieee80211_hw *hw, int if_id,
                 priv->ibss_beacon = conf->beacon;
         }
 
+        if (iwl3945_is_rfkill(priv))
+                goto done;
+
         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
             !is_multicast_ether_addr(conf->bssid)) {
                 /* If there is currently a HW scan going on in the background
@@ -7325,6 +7335,7 @@ static int iwl3945_mac_config_interface(struct ieee80211_hw *hw, int if_id,
                 iwl3945_commit_rxon(priv);
         }
 
+ done:
         spin_lock_irqsave(&priv->lock, flags);
         if (!conf->ssid_len)
                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
@@ -7361,11 +7372,12 @@ static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
 
         mutex_lock(&priv->mutex);
 
-        iwl3945_scan_cancel_timeout(priv, 100);
-        cancel_delayed_work(&priv->post_associate);
-        priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
-        iwl3945_commit_rxon(priv);
-
+        if (iwl3945_is_ready_rf(priv)) {
+                iwl3945_scan_cancel_timeout(priv, 100);
+                cancel_delayed_work(&priv->post_associate);
+                priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
+                iwl3945_commit_rxon(priv);
+        }
         if (priv->interface_id == conf->if_id) {
                 priv->interface_id = 0;
                 memset(priv->bssid, 0, ETH_ALEN);
@@ -7636,6 +7648,12 @@ static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
 
         spin_unlock_irqrestore(&priv->lock, flags);
 
+        if (!iwl3945_is_ready_rf(priv)) {
+                IWL_DEBUG_MAC80211("leave - not ready\n");
+                mutex_unlock(&priv->mutex);
+                return;
+        }
+
         /* we are restarting association process
          * clear RXON_FILTER_ASSOC_MSK bit
         */
@@ -7653,12 +7671,6 @@ static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
                 return;
         }
 
-        if (!iwl3945_is_ready_rf(priv)) {
-                IWL_DEBUG_MAC80211("leave - not ready\n");
-                mutex_unlock(&priv->mutex);
-                return;
-        }
-
         priv->only_active_channel = 0;
 
         iwl3945_set_rate(priv);