Re: [Devil-Linux-discuss] Devil Linux on Compacq Flash Card after upgrade from 1.3.6 to 1.4.2 ide=nodma not working anymore

[Serge L. <ser...@gm...>]

Hi Christian,

can you please check if "libata.dma=3" works for your ( instead of “ide=nodma”).
If not, you can try "libata.dma=0" - disable DMA for all pata and sata. ('=3' 
should disable it for CF only)

Docs (Documentation/kernel-parameters.txt )

	libata.dma=	[LIBATA] DMA control
			libata.dma=0	  Disable all PATA and SATA DMA
			libata.dma=1	  PATA and SATA Disk DMA only
			libata.dma=2	  ATAPI (CDROM) DMA only
			libata.dma=4	  Compact Flash DMA only

			Combinations also work, so libata.dma=3 enables DMA
			for disks and CDROMs, but not CFs.

Serge

On 03/29/2011 01:36 AM, Christian Höfgen wrote:

> I try to upgrade our Devil Linux version 1.3.6 which is installed on a Compaq
> Flash Card  to the latest 1.4.2 version.
>
> On 1.3.6 with boot loader Grub, and parameter “ide=nodma” it workt fine.
>
> With version 1.4.2 I get DMA timeout error
>
> Getting the message “had: ide_dma_sff_timer_expired: DMA status (0x21)”
>
> Than the message “had: DMA disabled”
>
> And then the system hangs on the message “ide0: reset time-out, stutus=0x80”
>
> I am not yet so familiar with Linux.
>
> But as far as I can see it looks like Grub has not been changed. It looks like
> the boot parameter “ide=nodma” is not picked up any more at boot time.
>
> Help would be appreciate.
>
> Greetings,
> Chris Höfgen
>
>
>
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