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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-11 23:54:01 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-11 23:54:01 +0200
commit90986028c98be10807bb6f48e883f33fa20e5499 (patch)
tree0350e6fb27b98529222d1c5b501817349c163c42 /drivers/ide/pci/slc90e66.c
parenta6fe837ed63aa812bea029a24b7aafc72ba8de88 (diff)
it8213/piix/slc90e66: don't change DMA settings when programming PIO
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/slc90e66.c')
-rw-r--r--drivers/ide/pci/slc90e66.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 214d396fc31..967b939e9d2 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/slc90e66.c Version 0.15 Jul 6, 2007
+ * linux/drivers/ide/pci/slc90e66.c Version 0.16 Jul 14, 2007
*
* Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
@@ -110,6 +110,11 @@ static int slc90e66_tune_chipset(ide_drive_t *drive, const u8 speed)
int u_speed = 0, u_flag = 1 << drive->dn;
u16 reg4042, reg44, reg48, reg4a;
+ if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
+ slc90e66_tune_pio(drive, speed - XFER_PIO_0);
+ return ide_config_drive_speed(drive, speed);
+ }
+
pci_read_config_word(dev, maslave, &reg4042);
sitre = (reg4042 & 0x4000) ? 1 : 0;
pci_read_config_word(dev, 0x44, &reg44);
@@ -125,11 +130,6 @@ static int slc90e66_tune_chipset(ide_drive_t *drive, const u8 speed)
case XFER_MW_DMA_2:
case XFER_MW_DMA_1:
case XFER_SW_DMA_2: break;
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_1:
- case XFER_PIO_0: break;
default: return -1;
}
@@ -149,10 +149,7 @@ static int slc90e66_tune_chipset(ide_drive_t *drive, const u8 speed)
pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
}
- if (speed > XFER_PIO_4)
- slc90e66_tune_pio(drive, slc90e66_dma_2_pio(speed));
- else
- slc90e66_tune_pio(drive, speed - XFER_PIO_0);
+ slc90e66_tune_pio(drive, slc90e66_dma_2_pio(speed));
return ide_config_drive_speed(drive, speed);
}