pata_marvell: Cable and reset fixes

There are two changes here. Firstly we switch to a cable detect method,
secondly the old code forgot to call ata_std_prereset() but somehow
managed to work anyway. Fix the missing call.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/pata_marvell.c

@@ -20,7 +20,7 @@
 #include <linux/ata.h>
 
 #define DRV_NAME	"pata_marvell"
-#define DRV_VERSION	"0.1.1"
+#define DRV_VERSION	"0.1.4"
 
 /**
  *	marvell_pre_reset	-	check for 40/80 pin
@@ -52,22 +52,23 @@ static int marvell_pre_reset(struct ata_port *ap)
 	if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
 	    (!(devices & 0x10)))	/* PATA enable ? */
 		return -ENOENT;
+	return ata_std_prereset(ap);
+}
 
+static int marvell_cable_detect(struct ata_port *ap)
+{
 	/* Cable type */
 	switch(ap->port_no)
 	{
 	case 0:
 		if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
-			ap->cbl = ATA_CBL_PATA40;
-		else
-			ap->cbl = ATA_CBL_PATA80;
-		break;
-
+			return ATA_CBL_PATA40;
+		return ATA_CBL_PATA80;
 	case 1: /* Legacy SATA port */
-		ap->cbl = ATA_CBL_SATA;
-		break;
+		return ATA_CBL_SATA;
 	}
-	return ata_std_prereset(ap);
+	BUG();
+	return 0;	/* Our BUG macro needs the right markup */
 }
 
 /**
@@ -123,6 +124,7 @@ static const struct ata_port_operations marvell_ops = {
 	.thaw			= ata_bmdma_thaw,
 	.error_handler		= marvell_error_handler,
 	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
+	.cable_detect		= marvell_cable_detect,
 
 	/* BMDMA handling is PCI ATA format, use helpers */
 	.bmdma_setup		= ata_bmdma_setup,