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Do not test for DMA status on legacy ATA devices. This has the unfortunate

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side effect that legacy ATA controllers at irq14 and irq15 cannot share
interrupts with anything else without major problems.
This fixes the ATAPI DMA problems some systems/devices have seen.
This commit is contained in:
Søren Schmidt 2006-01-24 12:34:56 +00:00
parent 0b4ae859ac
commit 634c377652
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=154768
1 changed files with 2 additions and 1 deletions
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3
sys/dev/ata/ata-pci.c
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@ -439,7 +439,8 @@ ata_pci_status(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
if (ch->dma && ((ch->flags & ATA_ALWAYS_DMASTAT) ||
if (!ata_legacy(device_get_parent(dev)) &&
ch->dma && ((ch->flags & ATA_ALWAYS_DMASTAT) ||
(ch->dma->flags & ATA_DMA_ACTIVE))) {
int bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;