ide: keep pointer to struct device instead of struct pci_dev in ide_hwif_t

Keep pointer to struct device instead of struct pci_dev in ide_hwif_t.

While on it:
* Use *dev->dma_mask instead of pci_dev->dma_mask in ide_toggle_bounce().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 24a85bb..7694969 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -594,7 +594,7 @@
 
 static void __devinit init_mmio_iops_scc(ide_hwif_t *hwif)
 {
-	struct pci_dev *dev = hwif->pci_dev;
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	struct scc_ports *ports = pci_get_drvdata(dev);
 	unsigned long dma_base = ports->dma;
 
@@ -620,7 +620,7 @@
 	hwif->io_ports[IDE_STATUS_OFFSET] = dma_base + 0x3c;
 	hwif->io_ports[IDE_CONTROL_OFFSET] = dma_base + 0x40;
 
-	hwif->irq = hwif->pci_dev->irq;
+	hwif->irq = dev->irq;
 	hwif->dma_base = dma_base;
 	hwif->config_data = ports->ctl;
 	hwif->mmio = 1;
@@ -636,7 +636,8 @@
 
 static void __devinit init_iops_scc(ide_hwif_t *hwif)
 {
-	struct pci_dev *dev =  hwif->pci_dev;
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
+
 	hwif->hwif_data = NULL;
 	if (pci_get_drvdata(dev) == NULL)
 		return;
@@ -726,10 +727,8 @@
 	unsigned long dma_size = pci_resource_len(dev, 1);
 
 	if (hwif->dmatable_cpu) {
-		pci_free_consistent(hwif->pci_dev,
-				    PRD_ENTRIES * PRD_BYTES,
-				    hwif->dmatable_cpu,
-				    hwif->dmatable_dma);
+		pci_free_consistent(dev, PRD_ENTRIES * PRD_BYTES,
+				    hwif->dmatable_cpu, hwif->dmatable_dma);
 		hwif->dmatable_cpu = NULL;
 	}