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/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index d3185e2..53bee59 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -316,14 +316,6 @@
 	sgiioc4_clearirq(drive);
 }
 
-static int
-sgiioc4_ide_dma_lostirq(ide_drive_t * drive)
-{
-	HWIF(drive)->resetproc(drive);
-
-	return __ide_dma_lostirq(drive);
-}
-
 static void
 sgiioc4_resetproc(ide_drive_t * drive)
 {
@@ -331,6 +323,14 @@
 	sgiioc4_clearirq(drive);
 }
 
+static void
+sgiioc4_dma_lost_irq(ide_drive_t * drive)
+{
+	sgiioc4_resetproc(drive);
+
+	ide_dma_lost_irq(drive);
+}
+
 static u8
 sgiioc4_INB(unsigned long port)
 {
@@ -607,7 +607,7 @@
 	hwif->ide_dma_test_irq = &sgiioc4_ide_dma_test_irq;
 	hwif->dma_host_on = &sgiioc4_dma_host_on;
 	hwif->dma_host_off = &sgiioc4_dma_host_off;
-	hwif->ide_dma_lostirq = &sgiioc4_ide_dma_lostirq;
+	hwif->dma_lost_irq = &sgiioc4_dma_lost_irq;
 	hwif->ide_dma_timeout = &__ide_dma_timeout;
 
 	hwif->INB = &sgiioc4_INB;