Commit c4199930 authored Mar 31, 2009 by Sergei Shtylyov Committed by Bartlomiej Zolnierkiewicz Mar 31, 2009

ide-iops: only clear DMA words on setting DMA mode

The bytes indicating current DMA mode in the identify data words 62, 63, and 88
should only change on setting a DMA mode, so stop clearing them on setting PIO
mode in ide_config_drive_speed(). While at it, correct SW/MW DMA mode masks...

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

parent 8d64fcd9

drivers/ide/ide-iops.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -386,9 +386,11 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
		return error;
		}

		if (speed >= XFER_SW_DMA_0) {
		id[ATA_ID_UDMA_MODES] &= ~0xFF00;
		id[ATA_ID_MWDMA_MODES] &= ~0x0F00;
		id[ATA_ID_SWDMA_MODES] &= ~0x0F00;
		id[ATA_ID_MWDMA_MODES] &= ~0x0700;
		id[ATA_ID_SWDMA_MODES] &= ~0x0700;
		}

		skip:
		#ifdef CONFIG_BLK_DEV_IDEDMA

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