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SubjectRe: [BUG] kernel 2.6.15.4: soft lockup detected on CPU#0!
Andrew Morton wrote:

>Folkert van Heusden <folkert@vanheusden.com> wrote:
>
>
>>I noticed that altough -i says using dma, that -d tells me it really is
>> off.
>>
>>
>
>Yup, `hdparm -i' tells you what the drive _can_ do, not what it's actually
>doing.
>
>
>
here's what i have:

sudo /sbin/hdparm -d /dev/hdd
/dev/hdd:
using_dma = 1 (on)

sudo /sbin/hdparm -d /dev/hdc
/dev/hdc:
using_dma = 1 (on)

So it appears that both CDROM/DVDROM drives are using DMA, which
confirms what i was thinking (since the traceback i have is not the same
as the one Folker provided which clearly indicates that it happens
during a pio operation ).

--
Charles-Edouard Ruault
GPG key Id E4D2B80C

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