ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2)

* Add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS to drivers/ide/Kconfig and use
  it instead of defining IDE_ARCH_OBSOLETE_DEFAULTS in <arch/ide.h>.

v2:
* Define ide_default_irq() in ide-probe.c/ns87415.c if not already defined
  and drop defining ide_default_irq() for CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS=n.

  [ Thanks to Stephen Rothwell and David Miller for noticing the problem. ]

Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/Kconfig

@@ -1092,6 +1092,9 @@ config BLK_DEV_IDEDMA
 config IDE_ARCH_OBSOLETE_INIT
 	def_bool ALPHA || (ARM && !ARCH_L7200) || BLACKFIN || X86 || IA64 || M32R || MIPS || PARISC || PPC || (SUPERH64 && BLK_DEV_IDEPCI) || SPARC
 
+config IDE_ARCH_OBSOLETE_DEFAULTS
+	def_bool ALPHA || X86 || IA64 || M32R || MIPS || PPC32
+
 endif
 
 config BLK_DEV_HD_ONLY

drivers/ide/ide-probe.c

@@ -1233,6 +1233,10 @@ static void drive_release_dev (struct device *dev)
 	complete(&drive->gendev_rel_comp);
 }
 
+#ifndef ide_default_irq
+#define ide_default_irq(irq) 0
+#endif
+
 static int hwif_init(ide_hwif_t *hwif)
 {
 	int old_irq;

drivers/ide/ide.c

@@ -165,6 +165,10 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif)
 	}
 }
 
+#ifndef CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS
+# define ide_default_io_base(index)	(0)
+# define ide_init_default_irq(base)	(0)
+#endif
 
 /*
  * init_ide_data() sets reasonable default values into all fields

drivers/ide/pci/ns87415.c

@@ -181,6 +181,10 @@ static int ns87415_ide_dma_setup(ide_drive_t *drive)
 	return 1;
 }
 
+#ifndef ide_default_irq
+#define ide_default_irq(irq) 0
+#endif
+
 static void __devinit init_hwif_ns87415 (ide_hwif_t *hwif)
 {
 	struct pci_dev *dev = to_pci_dev(hwif->dev);