commit b9c50409b9cb359d5340364841203e5505104a29
author Mahesh A Saptasagar <c_msapta@qti.qualcomm.com> Thu Jan 16 15:49:22 2014 +0530
committer Kiet Lam <c_kietl@qca.qualcomm.com> Mon Jan 27 19:25:02 2014 -0800
tree 1de6d26913eb7b5d25c1d3ec1db3610e3d068dda
parent ffdb52733ea0740988f28ccc11c5b8e17b13487b

wlan: Fix for STA taking long time to connect in suspend mode

After updating the sched scan results apps going into suspend
mode even before supplicant sends connect command, results delay
in connection to AP.

To resolve this issue hold a wakelock of 2 seconds after updating
the scan results so that supplicant sends connect command and its
get processed before apps go into suspend mode.

Change-Id: Iaf6307c7dd032e21337c37c33cd3f6603e2a4661
CRs-Fixed: 582635

CORE/HDD/inc/wlan_hdd_main.h

diff --git a/CORE/HDD/inc/wlan_hdd_main.h b/CORE/HDD/inc/wlan_hdd_main.h
index e1e21ae..c148dc3 100644
--- a/CORE/HDD/inc/wlan_hdd_main.h
+++ b/CORE/HDD/inc/wlan_hdd_main.h
@@ -1318,7 +1318,7 @@
 void wlan_hdd_reset_prob_rspies(hdd_adapter_t* pHostapdAdapter);
 void hdd_prevent_suspend(void);
 void hdd_allow_suspend(void);
-void hdd_allow_suspend_timeout(v_U32_t timeout);
+void hdd_prevent_suspend_timeout(v_U32_t timeout);
 bool hdd_is_ssr_required(void);
 void hdd_set_ssr_required(e_hdd_ssr_required value);
 

CORE/HDD/src/wlan_hdd_cfg80211.c

diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index 6072e3a..1163ce8 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -4670,7 +4670,7 @@
      * immediatly after the driver gets connect request(i.e after scan)
      * from supplicant, this result in app's is suspending and not able
      * to process the connect request to AP */
-    hdd_allow_suspend_timeout(1000);
+    hdd_prevent_suspend_timeout(1000);
 
 #ifdef FEATURE_WLAN_TDLS
     wlan_hdd_tdls_scan_done_callback(pAdapter);
@@ -9267,6 +9267,7 @@
     pHddCtx->isSchedScanUpdatePending = FALSE;
     spin_unlock(&pHddCtx->schedScan_lock);
 
+
     status =  hdd_get_front_adapter ( pHddCtx, &pAdapterNode );
 
     while ( NULL != pAdapterNode && VOS_STATUS_SUCCESS == status )
@@ -9276,10 +9277,20 @@
              (WLAN_HDD_INFRA_STATION == pAdapter->device_mode) )
         {
             if (0 != wlan_hdd_cfg80211_update_bss(pHddCtx->wiphy, pAdapter))
+            {
                 VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_WARN,
                       "%s: NO SCAN result", __func__);
+            }
             else
+            {
+                /* Acquire wakelock to handle the case where APP's tries to
+                 * suspend immediately after updating the scan results. Whis
+                 * results in app's is in suspended state and not able to
+                 * process the connect request to AP
+                 */
+                hdd_prevent_suspend_timeout(2000);
                 cfg80211_sched_scan_results(pHddCtx->wiphy);
+            }
 
             VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO,
                     "%s : cfg80211 scan result database updated", __func__);

CORE/HDD/src/wlan_hdd_main.c

diff --git a/CORE/HDD/src/wlan_hdd_main.c b/CORE/HDD/src/wlan_hdd_main.c
index f1177b5..1097bc5 100644
--- a/CORE/HDD/src/wlan_hdd_main.c
+++ b/CORE/HDD/src/wlan_hdd_main.c
@@ -7506,7 +7506,7 @@
 #endif
 }
 
-void hdd_allow_suspend_timeout(v_U32_t timeout)
+void hdd_prevent_suspend_timeout(v_U32_t timeout)
 {
 #ifdef WLAN_OPEN_SOURCE
     wake_lock_timeout(&wlan_wake_lock, msecs_to_jiffies(timeout));