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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-11 23:54:01 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-11 23:54:01 +0200 |
| commit | a6fe837ed63aa812bea029a24b7aafc72ba8de88 (patch) | |
| tree | 7f13ed5e930ec8a782c7c412ce4d0cab82e21872 /drivers/ide | |
| parent | ffe5415c3d6138aff412af7e455b3df4d53c0aa0 (diff) | |
| download | kernel_samsung_tuna-a6fe837ed63aa812bea029a24b7aafc72ba8de88.zip kernel_samsung_tuna-a6fe837ed63aa812bea029a24b7aafc72ba8de88.tar.gz kernel_samsung_tuna-a6fe837ed63aa812bea029a24b7aafc72ba8de88.tar.bz2 | |
alim15x3: PIO mode setup fixes
* Return failure in ->speedproc method for unsupported/invalid transfer
modes passed from user-space (fixes theoretical OOPS in ali_tune_pio()
and/or setting random PIO timings on host controller + disabling UDMA
bit + setting unsupported/invalid transfer mode on the device).
* Don't disable UDMA bit when programming PIO modes.
* Add FIXME about DMA timings never being set.
* Bump driver version.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/pci/alim15x3.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c index 005402a..f15c887 100644 --- a/drivers/ide/pci/alim15x3.c +++ b/drivers/ide/pci/alim15x3.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/alim15x3.c Version 0.25 Jun 9 2007 + * linux/drivers/ide/pci/alim15x3.c Version 0.26 Jul 14 2007 * * Copyright (C) 1998-2000 Michel Aubry, Maintainer * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer @@ -418,6 +418,14 @@ static int ali15x3_tune_chipset(ide_drive_t *drive, const u8 speed) u8 tmpbyte = 0x00; int m5229_udma = (hwif->channel) ? 0x57 : 0x56; + if (speed < XFER_PIO_0) + return 1; + + if (speed >= XFER_PIO_0 && speed <= XFER_PIO_5) { + ali_tune_pio(drive, speed - XFER_PIO_0); + return ide_config_drive_speed(drive, speed); + } + if (speed == XFER_UDMA_6) speed1 = 0x47; @@ -430,8 +438,9 @@ static int ali15x3_tune_chipset(ide_drive_t *drive, const u8 speed) tmpbyte &= ultra_enable; pci_write_config_byte(dev, m5229_udma, tmpbyte); - if (speed < XFER_SW_DMA_0) - ali_tune_pio(drive, speed - XFER_PIO_0); + /* + * FIXME: Oh, my... DMA timings are never set. + */ } else { pci_read_config_byte(dev, m5229_udma, &tmpbyte); tmpbyte &= (0x0f << ((1-unit) << 2)); |