iwlwifi: use dma_alloc_coherent

Change pci_alloc_consistent() to dma_alloc_coherent() so we can use
GFP_KERNEL flag.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 7af8ab8..3df488a 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -352,10 +352,10 @@
 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
 {
 	if (priv->shared_virt)
-		pci_free_consistent(priv->pci_dev,
-				    sizeof(struct iwl3945_shared),
-				    priv->shared_virt,
-				    priv->shared_phys);
+		dma_free_coherent(&priv->pci_dev->dev,
+				  sizeof(struct iwl3945_shared),
+				  priv->shared_virt,
+				  priv->shared_phys);
 }
 
 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
@@ -1241,10 +1241,10 @@
 		}
 	}
 
-	pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
-			    rxq->dma_addr);
-	pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
-			    rxq->rb_stts, rxq->rb_stts_dma);
+	dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
+			  rxq->dma_addr);
+	dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
+			  rxq->rb_stts, rxq->rb_stts_dma);
 	rxq->bd = NULL;
 	rxq->rb_stts  = NULL;
 }