ide: move drive->using_dma check to callers of ->dma_host_on method

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-dma.c

@@ -471,7 +471,7 @@ EXPORT_SYMBOL(ide_dma_off);
 
 void ide_dma_host_on(ide_drive_t *drive)
 {
-	if (drive->using_dma) {
+	if (1) {
 		ide_hwif_t *hwif	= HWIF(drive);
 		u8 unit			= (drive->select.b.unit & 0x01);
 		u8 dma_stat		= hwif->INB(hwif->dma_status);

drivers/ide/ide-iops.c

@@ -799,7 +799,8 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
 
  skip:
 #ifdef CONFIG_BLK_DEV_IDEDMA
-	if (speed >= XFER_SW_DMA_0 || (hwif->host_flags & IDE_HFLAG_VDMA))
+	if ((speed >= XFER_SW_DMA_0 || (hwif->host_flags & IDE_HFLAG_VDMA)) &&
+	    drive->using_dma)
 		hwif->dma_host_on(drive);
 	else if (hwif->dma_host_on)	/* check if host supports DMA */
 		ide_dma_off_quietly(drive);

drivers/ide/pci/cs5520.c

@@ -109,8 +109,7 @@ static void cs5520_set_dma_mode(ide_drive_t *drive, const u8 speed)
 
 static void cs5520_dma_host_on(ide_drive_t *drive)
 {
-	if (drive->using_dma)
-		drive->vdma = 1;
+	drive->vdma = 1;
 
 	ide_dma_host_on(drive);
 }

drivers/ide/pci/sc1200.c

@@ -221,7 +221,7 @@ static void sc1200_set_pio_mode(ide_drive_t *drive, const u8 pio)
 	if (mode != -1) {
 		printk("SC1200: %s: changing (U)DMA mode\n", drive->name);
 		ide_dma_off_quietly(drive);
-		if (ide_set_dma_mode(drive, mode) == 0)
+		if (ide_set_dma_mode(drive, mode) == 0 && drive->using_dma)
 			hwif->dma_host_on(drive);
 		return;
 	}