commit 4928e54b2e747af5af3e9912ab1281d0cbae135d
author Sushant Kaushik <skaushik@qti.qualcomm.com> Mon Dec 29 15:25:54 2014 +0530
committer Satyanarayana Dash <c_sadash@qti.qualcomm.com> Mon Jan 05 13:59:50 2015 +0530
tree c8a3be515a92078bfe08289ba0d39672893daa4a
parent f97ef5c2e855784904175a4e66b5a33fab633056

wlan: Fix Kernel Panic during driver unload.

During driver unload, no protection mechanism
is provided for sme queue.As a result between
sme_stop and sme_close there is a possibility
to queue SME command.As a part of fix, made
sure that no command enters into queue while
unload is in progress.

Change-Id: Id1b7bbe69eaca22b404e61f393c1a17b075d0f31
CRs-Fixed: 775944

CORE/SME/src/csr/csrApiRoam.c

diff --git a/CORE/SME/src/csr/csrApiRoam.c b/CORE/SME/src/csr/csrApiRoam.c
index 896e6ac..be3b6db 100644
--- a/CORE/SME/src/csr/csrApiRoam.c
+++ b/CORE/SME/src/csr/csrApiRoam.c
@@ -17237,6 +17237,13 @@
 eHalStatus csrQueueSmeCommand( tpAniSirGlobal pMac, tSmeCmd *pCommand, tANI_BOOLEAN fHighPriority )
 {
     eHalStatus status;
+
+    if (!SME_IS_START(pMac))
+    {
+        smsLog( pMac, LOGE, FL("Sme in stop state"));
+        return eHAL_STATUS_FAILURE;
+    }
+
     if( (eSmeCommandScan == pCommand->command) && pMac->scan.fDropScanCmd )
     {
         smsLog(pMac, LOGW, FL(" drop scan (scan reason %d) command"),