commit f850f1cf3ac6a8f2bca2179720a596a8eac5bf87
author Madan Mohan Koyyalamudi <c_mkoyya@qca.qualcomm.com> Wed Dec 05 16:03:53 2012 -0800
committer Mohit Khanna <mkhanna@qca.qualcomm.com> Tue Dec 11 14:49:38 2012 -0800
tree 42319d6d81222215d9036b2c6b03855213402346
parent 2a1b1e1a28e0c36a4cbc8146ac58d19fd92e3221

wlan: Page fault crash fix

Page fault crash fix
-Within RX thread try to alloc new frame for transfer finished
descriptor.
-When alloc new frame, iterator should be allocated and skb physical
address should be assigned.
-But just after iterator allocated, MC thread preempt and try to close
DXE channels.
-Then physical address is not assigned  or not allocated.

Change-Id: Ie769630be086cc910005a60a6ad5eaef7dbe1ded
CR-Fixed: 424290

CORE/WDI/WPAL/src/wlan_qct_pal_packet.c

diff --git a/CORE/WDI/WPAL/src/wlan_qct_pal_packet.c b/CORE/WDI/WPAL/src/wlan_qct_pal_packet.c
index 100e178..c6cfa86 100644
--- a/CORE/WDI/WPAL/src/wlan_qct_pal_packet.c
+++ b/CORE/WDI/WPAL/src/wlan_qct_pal_packet.c
@@ -720,7 +720,15 @@
       {
          /*RX Packets need to be DMA-ed from the device, perform DMA mapping 
            accordingly */
-         itReturnOSPktAddrFromDevice(pPacket, pInfo->pPhyAddr, pInfo->uLen);   
+         if(NULL == pInfo->pPhyAddr)
+         {
+            WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR, 
+                       " WLAN_PAL: %s: RX frame was not locked properly",  __func__); 
+         }
+         else
+         {
+            itReturnOSPktAddrFromDevice(pPacket, pInfo->pPhyAddr, pInfo->uLen);   
+         }
       }
       break;