ide: make void and rename ide_dma_lostirq() method

Since ide_dma_lostirq() method's result is discarded, make it return 'void'.
While at it, rename the method to dma_lost_irq(), drop the '__' prefix from the
default method's name, and do some cleanups in this method driver-wise:

- in aec62xx.c, rename the method in accordance with other drivers, and get rid
  of unnecessary variables there;

- in pdc202xx_old.c, define/use 'hwif' variable;

- in sgiioc4.c, rearrange the code to call the resetproc() method directly.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index c33d0b0..34d06dc 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -737,7 +737,7 @@
  * This is specific to the HPT366 UDMA chipset
  * by HighPoint|Triones Technologies, Inc.
  */
-static int hpt366_ide_dma_lostirq(ide_drive_t *drive)
+static void hpt366_dma_lost_irq(ide_drive_t *drive)
 {
 	struct pci_dev *dev = HWIF(drive)->pci_dev;
 	u8 mcr1 = 0, mcr3 = 0, scr1 = 0;
@@ -749,7 +749,7 @@
 		drive->name, __FUNCTION__, mcr1, mcr3, scr1);
 	if (scr1 & 0x10)
 		pci_write_config_byte(dev, 0x5a, scr1 & ~0x10);
-	return __ide_dma_lostirq(drive);
+	ide_dma_lost_irq(drive);
 }
 
 static void hpt370_clear_engine(ide_drive_t *drive)
@@ -1355,7 +1355,7 @@
 		hwif->ide_dma_end	= &hpt370_ide_dma_end;
 		hwif->ide_dma_timeout	= &hpt370_ide_dma_timeout;
 	} else
-		hwif->ide_dma_lostirq	= &hpt366_ide_dma_lostirq;
+		hwif->dma_lost_irq	= &hpt366_dma_lost_irq;
 
 	if (!noautodma)
 		hwif->autodma = 1;