commit 0ea15c262a1ec0577345b4aae00277d7fa7d9ad3
author Mahesh A Saptasagar <c_msapta@qti.qualcomm.com> Tue Oct 28 15:26:57 2014 +0530
committer AnjaneeDevi Kapparapu <c_akappa@qti.qualcomm.com> Wed Oct 29 15:34:03 2014 +0530
tree f54a20e1f10bee59e31f1c01177c69495312db9b
parent 7697221d8393b094960cbdaf312d472681639f65

wlan: Avoid race condition between MC/BC filter callbacks

Unable to set MC/BC filter if hdd_PowerStateChangedCB() callback
function executes as a part of dynamic DTIM handling logic before
"hdd_wlan_suspended" flag is set.

To mitigate this issue, set hdd_wlan_suspend flag before we set any
power states.

Change-Id: I899f6255a77ada1d6fbf8d627f9f8b2b89be673f
CRs-Fixed: 746790

CORE/HDD/src/wlan_hdd_early_suspend.c

diff --git a/CORE/HDD/src/wlan_hdd_early_suspend.c b/CORE/HDD/src/wlan_hdd_early_suspend.c
index b2c31e3..8cf8061 100644
--- a/CORE/HDD/src/wlan_hdd_early_suspend.c
+++ b/CORE/HDD/src/wlan_hdd_early_suspend.c
@@ -1399,6 +1399,7 @@
       return;
    }
 
+   pHddCtx->hdd_wlan_suspended = TRUE;
    hdd_set_pwrparams(pHddCtx);
    status =  hdd_get_front_adapter ( pHddCtx, &pAdapterNode );
    while ( NULL != pAdapterNode && VOS_STATUS_SUCCESS == status )
@@ -1450,7 +1451,6 @@
        status = hdd_get_next_adapter ( pHddCtx, pAdapterNode, &pNext );
        pAdapterNode = pNext;
    }
-   pHddCtx->hdd_wlan_suspended = TRUE;
 
 #ifdef SUPPORT_EARLY_SUSPEND_STANDBY_DEEPSLEEP
   if(pHddCtx->cfg_ini->nEnableSuspend == WLAN_MAP_SUSPEND_TO_STANDBY)