From: Imre Deak <imre.deak@nokia.com>
Date: Tue, 29 Mar 2011 17:26:54 +0000 (+0300)
Subject: gpu: pvr: fix PVRSRVWrapExtMemoryKM for user provided physical pages
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0eafc6b010fbbd2796e0b96d8ac9bb7f716164ca;p=sgx.git

gpu: pvr: fix PVRSRVWrapExtMemoryKM for user provided physical pages

Reported-by: Coverity

Signed-off-by: Imre Deak <imre.deak@nokia.com>
Reviewed-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com>
---

diff --git a/pvr/devicemem.c b/pvr/devicemem.c
index 881cf24..eb57ea3 100644
--- a/pvr/devicemem.c
+++ b/pvr/devicemem.c
@@ -713,7 +713,7 @@ enum PVRSRV_ERROR PVRSRVWrapExtMemoryKM(void *hDevCookie,
 	psDeviceNode = (struct PVRSRV_DEVICE_NODE *)hDevCookie;
 	PVR_ASSERT(psDeviceNode != NULL);
 
-	if (psDeviceNode == NULL) {
+	if (!psDeviceNode || (!pvLinAddr && !psExtSysPAddr)) {
 		PVR_DPF(PVR_DBG_ERROR,
 			 "PVRSRVWrapExtMemoryKM: invalid parameter");
 		return PVRSRV_ERROR_INVALID_PARAMS;