powerpc/powernv: Initialize DMA for PEs

The patch introduces additional wrapper function to call the original
implementation so that the DMA can be configured for all existing PEs.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Reviewed-by: Ram Pai <linuxram@us.ibm.com>
Reviewed-by: Richard Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/platforms/powernv/pci-ioda.c

@@ -1241,10 +1241,20 @@ static void __devinit pnv_pci_ioda_setup_seg(void)
 	}
 }
 
+static void __devinit pnv_pci_ioda_setup_DMA(void)
+{
+	struct pci_controller *hose, *tmp;
+
+	list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
+		pnv_ioda_setup_dma(hose->private_data);
+	}
+}
+
 static void __devinit pnv_pci_ioda_fixup(void)
 {
 	pnv_pci_ioda_setup_PEs();
 	pnv_pci_ioda_setup_seg();
+	pnv_pci_ioda_setup_DMA();
 }
 
 /*