diff -ruN linux-2.4.21-pre5/drivers/ide/ide-dma.c linux-2.4.21-pre5.ide-fixes/drivers/ide/ide-dma.c
--- linux-2.4.21-pre5/drivers/ide/ide-dma.c	2003-02-27 12:58:57.000000000 +0100
+++ linux-2.4.21-pre5.ide-fixes/drivers/ide/ide-dma.c	2003-02-27 13:03:38.000000000 +0100
@@ -112,7 +112,7 @@
 
 	{ "WDC AC11000H"	,	"ALL"		},
 	{ "WDC AC22100H"	,	"ALL"		},
-	{ "WDC AC32500H"	,	"ALL"		},
+/*	{ "WDC AC32500H"	,	"ALL"		},*//*mikpe*/
 	{ "WDC AC33100H"	,	"ALL"		},
 	{ "WDC AC31600H"	,	"ALL"		},
 	{ "WDC AC32100H"	,	"24.09P07"	},
@@ -193,7 +193,7 @@
 const char *bad_dma_drives[] = {"WDC AC11000H",
 				"WDC AC22100H",
 				"WDC AC32100H",
-				"WDC AC32500H",
+/*				"WDC AC32500H",*//*mikpe*/
 				"WDC AC33100H",
 				"WDC AC31600H",
  				NULL};
diff -ruN linux-2.4.21-pre5/drivers/ide/ide.c linux-2.4.21-pre5.ide-fixes/drivers/ide/ide.c
--- linux-2.4.21-pre5/drivers/ide/ide.c	2003-02-27 12:58:57.000000000 +0100
+++ linux-2.4.21-pre5.ide-fixes/drivers/ide/ide.c	2003-02-27 13:03:38.000000000 +0100
@@ -1015,6 +1015,7 @@
 int ide_register (int arg1, int arg2, int irq)
 {
 	hw_regs_t hw;
+	memset(&hw, 0, sizeof hw);
 	ide_init_hwif_ports(&hw, (ide_ioreg_t) arg1, (ide_ioreg_t) arg2, NULL);
 	hw.irq = irq;
 	return ide_register_hw(&hw, NULL);
@@ -1772,6 +1773,9 @@
 	if (strncmp(s,"hd",2) == 0 && s[2] == '=')	/* hd= is for hd.c   */
 		return 0;				/* driver and not us */
 
+	if (!strncmp(s, "idescsi=", 8))	/* for ide-scsi.c not us */
+		return 0;
+
 	if (strncmp(s,"ide",3) &&
 	    strncmp(s,"idebus",6) &&
 	    strncmp(s,"hd",2))		/* hdx= & hdxlun= */
diff -ruN linux-2.4.21-pre5/drivers/scsi/ide-scsi.c linux-2.4.21-pre5.ide-fixes/drivers/scsi/ide-scsi.c
--- linux-2.4.21-pre5/drivers/scsi/ide-scsi.c	2003-02-27 12:58:58.000000000 +0100
+++ linux-2.4.21-pre5.ide-fixes/drivers/scsi/ide-scsi.c	2003-02-27 13:03:38.000000000 +0100
@@ -734,6 +734,18 @@
 	NULL
 };
 
+static char *units;
+#ifdef MODULE
+MODULE_PARM(units, "s");
+#else
+static int __init setup_idescsi(char *s)
+{
+	units = s;
+	return 1;
+}
+__setup("idescsi=", setup_idescsi);
+#endif
+
 int idescsi_attach (ide_drive_t *drive)
 {
 	idescsi_scsi_t *scsi;
@@ -750,6 +762,12 @@
 //	int id = 2 * HWIF(drive)->index + drive->select.b.unit;
 //	int id = drive_count + 1;
 
+#if 0
+	if (units && !strstr(units, drive->name)) {
+		printk("ide-scsi: ignoring unit %s\n", drive->name);
+		return 0;
+	}
+#endif
 	for (id = 0; id < MAX_HWIFS*MAX_DRIVES; id++)
 		if (idescsi_drives[id] == NULL)
 			break;
@@ -831,6 +849,10 @@
 		failed = 0;
 		while ((drive = ide_scan_devices(media[i],
 				idescsi_driver.name, NULL, failed++)) != NULL) {
+			if (units && !strstr(units, drive->name)) {
+				printk("ide-scsi: ignoring unit %s\n", drive->name);
+				continue;
+			}
 #ifdef MODULE
 			/* skip drives we were told to ignore */
 			if (ignore != NULL && strstr(ignore, drive->name)) {