Re: DMA problem

[lsorense@csclub.uwaterloo.ca (Lennart Sorensen)]

On Wed, Apr 06, 2005 at 12:49:32AM +0530, Bhushan Kulkarni wrote:
> Hello List ,
>        i have sis5513 ide controller , when i try to enable DMA for my
> Harddisk , cdrom,
> i get following message -->
> 
> # hdparm -d1 /dev/hda
> /dev/hda:
>  setting using_dma to 1 (on)
>  HDIO_SET_DMA failed: Operation not permitted
>  using_dma    =  0 (off)
> 
> I am running  "2.6.11-9-amd64-k8" kernel ..  I have added sis5513
> module to /etc/modules at the top. Still facing same  problem.
> 
> How can i enable this DMA ??
> 

Could you post the output of dmesg after booting?

Maybe the initrd is loading ide-generic before the sis driver in which
case the generic driver would run the drives instead, which doesn't
allow dma.

Len Sorensen