Let ide interfaces choose a parent device

Hi !

Right now, the parent struct device of IDE interfaces is forced to be either the pci_dev or some not-yet implemented legacy node. This is wrong as non-PCI ide interfaces may well hang off different bus types. For PowerMac, for example, I'm defining a bus type for Apple's "MacIO" ASIC and ide/ppc/pmac.c will hang off a device on that bus.

The following patch will let the HWIF fill the parent pointer and only put it's "default" stuff in there if it's NULL.

drivers/ide/ide-probe.c +6 -4

@@ -696,10 +696,12 @@
 	strncpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE);
 	snprintf(hwif->gendev.name,DEVICE_NAME_SIZE,"IDE Controller");
 	hwif->gendev.driver_data = hwif;
-	if (hwif->pci_dev)
-		hwif->gendev.parent = &hwif->pci_dev->dev;
-	else
-		hwif->gendev.parent = NULL; /* Would like to do = &device_legacy */
+	if (hwif->gendev.parent == NULL) {
+		if (hwif->pci_dev)
+			hwif->gendev.parent = &hwif->pci_dev->dev;
+		else
+			hwif->gendev.parent = NULL; /* Would like to do = &device_legacy */
+	}
 	device_register(&hwif->gendev);
 
 	if (hwif->mmio == 2)