Don't compile the standard IDE disk driver, all we need is the TiVo-specific
one.  If you really want it, make it a module.  Saves 8KB in the kernel.

You will need to reconfig your kernel after applying this patch.

--- ./arch/ppc/defconfig.DIST	Wed Mar 13 16:11:16 2002
+++ ./arch/ppc/defconfig	Sun Nov 17 22:54:23 2002
@@ -48,7 +48,8 @@
 # Please see Documentation/ide.txt for help/info on IDE drives
 #
 # CONFIG_BLK_DEV_HD_IDE is not set
-CONFIG_BLK_DEV_IDEDISK=y
+# CONFIG_BLK_DEV_IDEDISK is not set
+CONFIG_BLK_DEV_IDETIVO=y
 # CONFIG_BLK_DEV_IDECD is not set
 # CONFIG_BLK_DEV_IDETAPE is not set
 # CONFIG_BLK_DEV_IDEFLOPPY is not set
--- ./drivers/block/ide.c.DIST	Fri May 31 16:28:13 2002
+++ ./drivers/block/ide.c	Sun Nov 17 12:48:21 2002
@@ -3121,8 +3121,10 @@
 	 */
 #ifdef CONFIG_BLK_DEV_IDEDISK
 	(void) idedisk_init();
-	(void) idetivo_init();
 #endif /* CONFIG_BLK_DEV_IDEDISK */
+#ifdef CONFIG_BLK_DEV_IDETIVO
+	(void) idetivo_init();
+#endif /* CONFIG_BLK_DEV_IDETIVO */
 #ifdef CONFIG_BLK_DEV_IDECD
 	(void) ide_cdrom_init();
 #endif /* CONFIG_BLK_DEV_IDECD */
--- ./drivers/block/Config.in.DIST	Fri May 31 16:28:13 2002
+++ ./drivers/block/Config.in	Sun Nov 17 12:53:30 2002
@@ -15,6 +15,7 @@
   bool 'Old harddisk (MFM/RLL/IDE) driver' CONFIG_BLK_DEV_HD_ONLY
 else
   bool '   Use old disk-only driver on primary interface' CONFIG_BLK_DEV_HD_IDE
+  dep_tristate '   Include TiVo IDE/ATA-2 DISK support' CONFIG_BLK_DEV_IDETIVO $CONFIG_BLK_DEV_IDE
   dep_tristate '   Include IDE/ATA-2 DISK support' CONFIG_BLK_DEV_IDEDISK $CONFIG_BLK_DEV_IDE
   dep_tristate '   Include IDE/ATAPI CDROM support' CONFIG_BLK_DEV_IDECD $CONFIG_BLK_DEV_IDE
   dep_tristate '   Include IDE/ATAPI TAPE support' CONFIG_BLK_DEV_IDETAPE $CONFIG_BLK_DEV_IDE
--- ./drivers/block/Makefile.DIST	Sat Nov  9 13:29:51 2002
+++ ./drivers/block/Makefile	Sun Nov 17 12:50:43 2002
@@ -88,6 +88,10 @@
 L_OBJS += ide-tivodma.o
 endif
 
+ifeq ($(CONFIG_BLK_DEV_IDETIVO),y)
+L_OBJS += ide-tivo.o
+endif
+
 ifeq ($(CONFIG_BLK_DEV_PS2),y)
 L_OBJS += ps2esdi.o
 endif
@@ -122,18 +126,10 @@
 endif
 
 ifeq ($(CONFIG_BLK_DEV_IDEDISK),y)
-L_OBJS += ide-disk.o ide-tivo.o
-else
-  ifeq ($(CONFIG_BLK_DEV_IDEDISK),m)
-  M_OBJS += ide-disk.o ide-tivo.o
-  endif
-endif
-
-ifeq ($(CONFIG_BLK_DEV_IDEDISK),y)
-L_OBJS += ide-disk.o ide-tivo.o
+L_OBJS += ide-disk.o
 else
   ifeq ($(CONFIG_BLK_DEV_IDEDISK),m)
-  M_OBJS += ide-disk.o ide-tivo.o
+  M_OBJS += ide-disk.o
   endif
 endif
 
--- ./include/linux/ide.h.DIST	Fri May 31 16:28:18 2002
+++ ./include/linux/ide.h	Sun Nov 17 12:57:23 2002
@@ -631,8 +632,10 @@
 
 #ifdef CONFIG_BLK_DEV_IDEDISK
 int idedisk_init (void);
-int idetivo_init (void);
 #endif /* CONFIG_BLK_DEV_IDEDISK */
+#ifdef CONFIG_BLK_DEV_IDETIVO
+int idetivo_init (void);
+#endif /* CONFIG_BLK_DEV_IDETIVO */
 #ifdef CONFIG_BLK_DEV_IDECD
 int ide_cdrom_init (void);
 #endif /* CONFIG_BLK_DEV_IDECD */