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List:       linux-kernel
Subject:    Re: Re: Re: IDE DMA breakage w/ 2.4.21+ and 2.6.0-test4(-mm4)
From:       Mikulas Patocka <mikulas () artax ! karlin ! mff ! cuni ! cz>
Date:       2003-08-31 23:39:57
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> I did few more experiments, and one strange thing is that /proc/dma does not
> change when turning using_dma on thru hdparm:
>
>  1: SoundBlaster8
>  4: cascade
>
> I'd expect some entry for ide to appear or so. Or is this normal?

/proc/dma lists isa dma devices.
pci busmaster dma that is used by ide controllers has nothing to do with
it. It's totally different technology and it's reported in /proc/pci (look
for "Master Capable").

Mikulas

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