mwifiex: remove low priority scan handling

We have a logic in driver to delay or abort low priority scan
to serve Tx traffic effectively. With scan channel
gap support added, firmware now allows driver to send Tx data while
scan operation is in progress. Hence low priority scan handling
in driver is not required now. This patch removes related code.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 29 insertions, 30 deletions

diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index 2d1a2471fae3..c09ebeee6ddf 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -1766,7 +1766,7 @@ static void mwifiex_complete_scan(struct mwifiex_private *priv)
 static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
 {
         struct mwifiex_adapter *adapter = priv->adapter;
-        struct cmd_ctrl_node *cmd_node;
+        struct cmd_ctrl_node *cmd_node, *tmp_node;
         unsigned long flags;
 
         spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
@@ -1787,37 +1787,36 @@ static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
                         priv->scan_aborting = false;
                         dev_dbg(adapter->dev, "info: scan already aborted\n");
                 }
-        } else {
-                if ((priv->scan_aborting && !priv->scan_request) ||
-                    priv->scan_block) {
-                        spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
-                                               flags);
-                        adapter->scan_delay_cnt = MWIFIEX_MAX_SCAN_DELAY_CNT;
-                        mod_timer(&priv->scan_delay_timer, jiffies);
-                        dev_dbg(priv->adapter->dev,
-                                "info: %s: triggerring scan abort\n", __func__);
-                } else if (!mwifiex_wmm_lists_empty(adapter) &&
-                           (priv->scan_request && (priv->scan_request->flags &
-                                            NL80211_SCAN_FLAG_LOW_PRIORITY))) {
-                        spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
-                                               flags);
-                        adapter->scan_delay_cnt = 1;
-                        mod_timer(&priv->scan_delay_timer, jiffies +
-                                  msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
-                        dev_dbg(priv->adapter->dev,
-                                "info: %s: deferring scan\n", __func__);
-                } else {
-                        /* Get scan command from scan_pending_q and put to
-                         * cmd_pending_q
-                         */
-                        cmd_node = list_first_entry(&adapter->scan_pending_q,
-                                                    struct cmd_ctrl_node, list);
+        } else if ((priv->scan_aborting && !priv->scan_request) ||
+                   priv->scan_block) {
+                list_for_each_entry_safe(cmd_node, tmp_node,
+                                         &adapter->scan_pending_q, list) {
                         list_del(&cmd_node->list);
-                        spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
-                                               flags);
-                        mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
-                                                        true);
+                        mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
+                }
+                spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
+
+                spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
+                adapter->scan_processing = false;
+                spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
+
+                if (priv->scan_request) {
+                        dev_dbg(adapter->dev, "info: aborting scan\n");
+                        cfg80211_scan_done(priv->scan_request, 1);
+                        priv->scan_request = NULL;
+                } else {
+                        priv->scan_aborting = false;
+                        dev_dbg(adapter->dev, "info: scan already aborted\n");
                 }
+        } else {
+                /* Get scan command from scan_pending_q and put to
+                 * cmd_pending_q
+                 */
+                cmd_node = list_first_entry(&adapter->scan_pending_q,
+                                            struct cmd_ctrl_node, list);
+                list_del(&cmd_node->list);
+                spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
+                mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
         }
 
         return;