diff --git a/[refs] b/[refs]
index e5ad4f4e97be..86cf90e58b98 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2ea86d5ac6f5c850d719aa79de12c9af53bb244b
+refs/heads/master: 91ec61f8f01cf32868e2ed2fa96a299e77964055
diff --git a/trunk/drivers/staging/vt6656/iwctl.c b/trunk/drivers/staging/vt6656/iwctl.c
index c335808211ee..d0cf7d8a20e5 100644
--- a/trunk/drivers/staging/vt6656/iwctl.c
+++ b/trunk/drivers/staging/vt6656/iwctl.c
@@ -1345,9 +1345,12 @@ int iwctl_siwpower(struct net_device *dev, struct iw_request_info *info,
 		return rc;
 	}
 
+	spin_lock_irq(&pDevice->lock);
+
 	if (wrq->disabled) {
 		pDevice->ePSMode = WMAC_POWER_CAM;
 		PSvDisablePowerSaving(pDevice);
+		spin_unlock_irq(&pDevice->lock);
 		return rc;
 	}
 	if ((wrq->flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
@@ -1358,6 +1361,9 @@ int iwctl_siwpower(struct net_device *dev, struct iw_request_info *info,
 		pDevice->ePSMode = WMAC_POWER_FAST;
 		PSvEnablePowerSaving((void *)pDevice, pMgmt->wListenInterval);
 	}
+
+	spin_unlock_irq(&pDevice->lock);
+
 	switch (wrq->flags & IW_POWER_MODE) {
 	case IW_POWER_UNICAST_R:
 		DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO " SIOCSIWPOWER: IW_POWER_UNICAST_R \n");