Commit 7b971df1 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

serverworks: cleanup ->set_dma_mode method 



IDE core guarantees that ->set_dma_mode will be called only
for DMA modes set in SWDMA/MWDMA/UDMA masks.

There should be no functionality changes caused by this patch.

Acked-by: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 08590556

drivers/ide/pci/serverworks.c

+6 −19
Original line number Diff line number Diff line
@@ -164,25 +164,12 @@ static void svwks_set_dma_mode(ide_drive_t *drive, const u8 speed) 
	ultra_timing	&= ~(0x0F << (4*unit));

	ultra_enable	&= ~(0x01 << drive->dn);



	switch(speed) {

		case XFER_MW_DMA_2:

		case XFER_MW_DMA_1:

		case XFER_MW_DMA_0:

			dma_timing |= dma_modes[speed - XFER_MW_DMA_0];

			break;



		case XFER_UDMA_5:

		case XFER_UDMA_4:

		case XFER_UDMA_3:

		case XFER_UDMA_2:

		case XFER_UDMA_1:

		case XFER_UDMA_0:

	if (speed >= XFER_UDMA_0) {

		dma_timing   |= dma_modes[2];

			ultra_timing |= ((udma_modes[speed - XFER_UDMA_0]) << (4*unit));

		ultra_timing |= (udma_modes[speed - XFER_UDMA_0] << (4 * unit));

		ultra_enable |= (0x01 << drive->dn);

		default:

			break;

	}

	} else if (speed >= XFER_MW_DMA_0)

		dma_timing   |= dma_modes[speed - XFER_MW_DMA_0];



	pci_write_config_byte(dev, drive_pci2[drive->dn], dma_timing);

	pci_write_config_byte(dev, (0x56|hwif->channel), ultra_timing);

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