Re: [BUG] kernel 2.6.15.4: soft lockup detected on CPU#0!

[Charles-Edouard Ruault]

Andrew Morton wrote:

>Folkert van Heusden <folkert@xxxxxxxxxxxxxx> 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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