ide: set/clear drive->waiting_for_dma flag in the core code

Set/clear drive->waiting_for_dma flag in the core code
instead of in ->dma_setup and ->dma_end methods.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/trm290.c b/drivers/ide/trm290.c
index 0be27ca..c0528f2 100644
--- a/drivers/ide/trm290.c
+++ b/drivers/ide/trm290.c
@@ -198,9 +198,9 @@
 		return 1;
 
 	outl(hwif->dmatable_dma | rw, hwif->dma_base);
-	drive->waiting_for_dma = 1;
 	/* start DMA */
 	outw(count * 2 - 1, hwif->dma_base + 2);
+
 	return 0;
 }
 
@@ -211,11 +211,7 @@
 
 static int trm290_dma_end(ide_drive_t *drive)
 {
-	u16 status;
-
-	drive->waiting_for_dma = 0;
-
-	status = inw(drive->hwif->dma_base + 2);
+	u16 status = inw(drive->hwif->dma_base + 2);
 
 	trm290_prepare_drive(drive, 0);