atiixp/cs5535/scc_pata: fix "idex=ata66" parameter handling

Don't override the cable type if the "idex=ata66" parameter was used.

While at it:

* atiixp.c: factor out cable detection to atiixp_cable_detect() from
  init_hwif_atiixp().

* cs5535.c: pass 'ide_hwif_t *hwif' instead of 'struct pci_dev *dev' to
  cs5535_cable_detect().

* scc_pata.c: factor out cable detection to scc_cable_detect() from
  init_hwif_scc() and remove incorrect comment.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 66433aa..5004643 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -155,8 +155,9 @@
 	cs5535_set_speed(drive, XFER_PIO_0 + pio);
 }
 
-static u8 __devinit cs5535_cable_detect(struct pci_dev *dev)
+static u8 __devinit cs5535_cable_detect(ide_hwif_t *hwif)
 {
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	u8 bit;
 
 	/* if a 80 wire cable was detected */
@@ -175,15 +176,14 @@
  */
 static void __devinit init_hwif_cs5535(ide_hwif_t *hwif)
 {
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-
 	hwif->set_pio_mode = &cs5535_set_pio_mode;
 	hwif->set_dma_mode = &cs5535_set_dma_mode;
 
 	if (hwif->dma_base == 0)
 		return;
 
-	hwif->cbl = cs5535_cable_detect(dev);
+	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+		hwif->cbl = cs5535_cable_detect(hwif);
 }
 
 static const struct ide_port_info cs5535_chipset __devinitdata = {