Re: dma fails with kernel 2.4.21

[Kristian Peters <kristian.peters@korseby.net>]

Marino Fernandez <mjferna@yahoo.com> schrieb:
> Marino@lifebook:~$ uname -r
> 2.4.21
> Marino@lifebook:~$ sudo hdparm -d1 /dev/hdc
> 
> /dev/hdc:
>  setting using_dma to 1 (on)
>  using_dma    =  1 (on)

Have you tried to mount a cdrom ? I can safely enable DMA but accessing the cdrom won't work.

hdb: LTN485, ATAPI CD/DVD-ROM drive
hdb: attached ide-scsi driver.

If someone is interested, the relevant parts of my config:

# CONFIG_BLK_DEV_ADMA100 is not set
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDECD=m
# CONFIG_BLK_DEV_IDECS is not set
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDEDMA_FORCED=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_BLK_DEV_IDEFLOPPY=y
CONFIG_BLK_DEV_IDE_MODES=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDESCSI=m
# CONFIG_BLK_DEV_IDETAPE is not set
CONFIG_BLK_DEV_IDE=y
# CONFIG_CD_NO_IDESCSI is not set
# CONFIG_DMA_NONPCI is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_HPT34X_AUTODMA is not set
# CONFIG_IDE_CHIPSETS is not set
# CONFIG_IDEDISK_MULTI_MODE is not set
CONFIG_IDEDISK_STROKE=y
# CONFIG_IDEDMA_AUTO is not set
# CONFIG_IDEDMA_IVB is not set
# CONFIG_IDEDMA_ONLYDISK is not set
# CONFIG_IDEDMA_PCI_AUTO is not set
# CONFIG_IDEDMA_PCI_WIP is not set
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_IDE_TASK_IOCTL=y
CONFIG_IDE=y
# CONFIG_PARIDE is not set
# CONFIG_SCSI_EATA_DMA is not set

*Kristian

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