linux-kernel - [PATCH 01/11] ide: respect current DMA setting during resume

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Date:	Sun, 09 Nov 2008 17:22:19 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	linux-ide@...r.kernel.org
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 01/11] ide: respect current DMA setting during resume

From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: [PATCH] ide: respect current DMA setting during resume

Respect current DMA setting during resume, otherwise PIO timings
may get destroyed if host uses shared PIO/MWDMA timings.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
 drivers/ide/ide-io.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -192,10 +192,8 @@ static ide_startstop_t ide_start_power_s
 		 */
 		if (drive->hwif->dma_ops == NULL)
 			break;
-		/*
-		 * TODO: respect IDE_DFLAG_USING_DMA
-		 */
-		ide_set_dma(drive);
+		if (drive->dev_flags & IDE_DFLAG_USING_DMA)
+			ide_set_dma(drive);
 		break;
 	}
 
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