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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-16 22:29:56 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-16 22:29:56 +0200 |
| commit | 1c54a93d4de34c87be9c63fe5094157e10995d6b (patch) | |
| tree | 9da94f64f4d432ca222547f555c9c1bb10bf2e25 /drivers/ide/pci/slc90e66.c | |
| parent | 3135469e1f679b1728fa047ed43b0c63cdf50c84 (diff) | |
| download | kernel_samsung_smdk4412-1c54a93d4de34c87be9c63fe5094157e10995d6b.zip kernel_samsung_smdk4412-1c54a93d4de34c87be9c63fe5094157e10995d6b.tar.gz kernel_samsung_smdk4412-1c54a93d4de34c87be9c63fe5094157e10995d6b.tar.bz2 | |
it8213/piix/slc90e66: "de-couple" PIO and UDMA modes
Don't force PIO4 when programming UDMA mode (suggested by Sergei).
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.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c index bf21f1d..106ca79 100644 --- a/drivers/ide/pci/slc90e66.c +++ b/drivers/ide/pci/slc90e66.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/slc90e66.c Version 0.17 Aug 2, 2007 + * linux/drivers/ide/pci/slc90e66.c Version 0.18 Aug 9, 2007 * * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com> @@ -82,7 +82,6 @@ static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed) int sitre = 0, a_speed = 7 << (drive->dn * 4); int u_speed = 0, u_flag = 1 << drive->dn; u16 reg4042, reg44, reg48, reg4a; - u8 pio; pci_read_config_word(dev, maslave, ®4042); sitre = (reg4042 & 0x4000) ? 1 : 0; @@ -111,10 +110,9 @@ static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed) pci_read_config_word(dev, 0x4a, ®4a); pci_write_config_word(dev, 0x4a, reg4a|u_speed); } - - pio = 4; } else { const u8 mwdma_to_pio[] = { 0, 3, 4 }; + u8 pio; if (reg48 & u_flag) pci_write_config_word(dev, 0x48, reg48 & ~u_flag); @@ -125,9 +123,9 @@ static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed) pio = mwdma_to_pio[speed - XFER_MW_DMA_0]; else pio = 2; /* only SWDMA2 is allowed */ - } - slc90e66_set_pio_mode(drive, pio); + slc90e66_set_pio_mode(drive, pio); + } } static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif) |