From: Janusz Sobczak <janusz.sobczak@imgtec.com>
Date: Mon, 9 Aug 2010 11:23:36 +0000 (+0200)
Subject: gpu: pvr: Check SysAcquireData return value.
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=099c91f6aafead97d4a3c61d5eda9f29290201fc;p=sgx.git

gpu: pvr: Check SysAcquireData return value.

SysAcquireData() could theoretically fail.
This patch adds missing return value check in SGXReadDiffCountersKM().

Signed-off-by: Janusz Sobczak <janusz.sobczak@imgtec.com>
Signed-off-by: Imre Deak <imre.deak@nokia.com>
---

diff --git a/pvr/sgxinit.c b/pvr/sgxinit.c
index 10dbc5a..39c3cf9 100644
--- a/pvr/sgxinit.c
+++ b/pvr/sgxinit.c
@@ -1531,7 +1531,8 @@ enum PVRSRV_ERROR SGXReadDiffCountersKM(void *hDevHandle, u32 ui32Reg,
 		psDevInfo->ui32HWGroupRequested = ui32New;
 	psDevInfo->ui32HWReset |= ui32NewReset;
 
-	SysAcquireData(&psSysData);
+	if (SysAcquireData(&psSysData) != PVRSRV_OK)
+		return PVRSRV_ERROR_GENERIC;
 
 	psPowerDevice = psSysData->psPowerDeviceList;
 	while (psPowerDevice) {