ide: remove ->dma_master field from ide_hwif_t (take 5)

* Convert cmd64x, hpt366 and pdc202xx_old host drivers to use
  pci_resource_start(hwif->pci_dev, 4) instead of hwif->dma_master.

* Remove no longer needed ->dma_master field from ide_hwif_t.

v2:
* Use the more readable 'hwif->dma_base - (hwif->channel * 8)' instead of
  pci_resource_start(hwif->pci_dev, 4).

v3:
* Use hwif->extra_base in hpt366/pdc20xx_old + some cosmetic fixups over v2
  (suggested by Sergei).

v4:
* Correct offsets in hpt3xxn_set_clock().

v5:
* Use hwif->extra_base in hpt366 for _real_ this time. (Noticed by Sergei)

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 4703837bf1fc..7568c3e81f2f 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -968,11 +968,6 @@ void ide_setup_dma(ide_hwif_t *hwif, unsigned long base, unsigned num_ports)
 
         hwif->dma_base = base;
 
-        if (hwif->mate)
-                hwif->dma_master = hwif->channel ? hwif->mate->dma_base : base;
-        else
-                hwif->dma_master = base;
-
         if (!(hwif->dma_command))
                 hwif->dma_command       = hwif->dma_base;
         if (!(hwif->dma_vendor1))
@@ -1014,8 +1009,6 @@ void ide_setup_dma(ide_hwif_t *hwif, unsigned long base, unsigned num_ports)
                        hwif->drives[1].name, (dma_stat & 0x40) ? "DMA" : "pio");
         }
         printk("\n");
-
-        BUG_ON(!hwif->dma_master);
 }
 
 EXPORT_SYMBOL_GPL(ide_setup_dma);