X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fide%2Fide-dma.c;h=ead141e2db9e2d12213daaa5d746fe178a05724d;hb=5a6248cac22a77588f81c7473cfd03d250cc5b56;hp=5fe85191d49c1f05cffc34aeb429dbbb54971f80;hpb=57a44415beee38d1afcd8e1b5fad66f3414d2dac;p=linux-2.6

diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 5fe85191d4..ead141e2db 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -119,15 +119,17 @@ static const struct drive_list_entry drive_blacklist [] = {
 	{ "HITACHI CDR-8335"	,	"ALL"		},
 	{ "HITACHI CDR-8435"	,	"ALL"		},
 	{ "Toshiba CD-ROM XM-6202B"	,	"ALL"		},
+	{ "TOSHIBA CD-ROM XM-1702BC",	"ALL"		},
 	{ "CD-532E-A"		,	"ALL"		},
 	{ "E-IDE CD-ROM CR-840",	"ALL"		},
 	{ "CD-ROM Drive/F5A",	"ALL"		},
 	{ "WPI CDD-820",		"ALL"		},
 	{ "SAMSUNG CD-ROM SC-148C",	"ALL"		},
 	{ "SAMSUNG CD-ROM SC",	"ALL"		},
-	{ "SanDisk SDP3B-64"	,	"ALL"		},
 	{ "ATAPI CD-ROM DRIVE 40X MAXIMUM",	"ALL"		},
 	{ "_NEC DV5800A",               "ALL"           },  
+	{ "SAMSUNG CD-ROM SN-124",	"N001" },
+	{ "Seagate STT20000A",		"ALL" },
 	{ NULL			,	NULL		}
 
 };
@@ -670,41 +672,6 @@ int __ide_dma_good_drive (ide_drive_t *drive)
 
 EXPORT_SYMBOL(__ide_dma_good_drive);
 
-int ide_use_dma(ide_drive_t *drive)
-{
-	struct hd_driveid *id = drive->id;
-	ide_hwif_t *hwif = drive->hwif;
-
-	if ((id->capability & 1) == 0 || drive->autodma == 0)
-		return 0;
-
-	/* consult the list of known "bad" drives */
-	if (__ide_dma_bad_drive(drive))
-		return 0;
-
-	/* capable of UltraDMA modes */
-	if (id->field_valid & 4) {
-		if (hwif->ultra_mask & id->dma_ultra)
-			return 1;
-	}
-
-	/* capable of regular DMA modes */
-	if (id->field_valid & 2) {
-		if (hwif->mwdma_mask & id->dma_mword)
-			return 1;
-		if (hwif->swdma_mask & id->dma_1word)
-			return 1;
-	}
-
-	/* consult the list of known "good" drives */
-	if (__ide_dma_good_drive(drive) && id->eide_dma_time < 150)
-		return 1;
-
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(ide_use_dma);
-
 static const u8 xfer_mode_bases[] = {
 	XFER_UDMA_0,
 	XFER_MW_DMA_0,
@@ -731,10 +698,12 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base)
 			mask &= 0x07;
 		break;
 	case XFER_MW_DMA_0:
-		mask = id->dma_mword & hwif->mwdma_mask;
+		if (id->field_valid & 2)
+			mask = id->dma_mword & hwif->mwdma_mask;
 		break;
 	case XFER_SW_DMA_0:
-		mask = id->dma_1word & hwif->swdma_mask;
+		if (id->field_valid & 2)
+			mask = id->dma_1word & hwif->swdma_mask;
 		break;
 	default:
 		BUG();
@@ -783,8 +752,11 @@ int ide_tune_dma(ide_drive_t *drive)
 {
 	u8 speed;
 
-	/* TODO: use only ide_max_dma_mode() */
-	if (!ide_use_dma(drive))
+	if ((drive->id->capability & 1) == 0 || drive->autodma == 0)
+		return 0;
+
+	/* consult the list of known "bad" drives */
+	if (__ide_dma_bad_drive(drive))
 		return 0;
 
 	speed = ide_max_dma_mode(drive);
@@ -792,9 +764,10 @@ int ide_tune_dma(ide_drive_t *drive)
 	if (!speed)
 		return 0;
 
-	drive->hwif->speedproc(drive, speed);
+	if (drive->hwif->speedproc(drive, speed))
+		return 0;
 
-	return ide_dma_enable(drive);
+	return 1;
 }
 
 EXPORT_SYMBOL_GPL(ide_tune_dma);