How do I get a drive added to the DMA blacklists in ide-dma.c? I sent
E-mail to Andre Hedrick in August about a drive that claims to support
DMA but flakes out as soon as the kernel tries to use it -- the "WDC
AC31000H". This is not surprising, since all the other WDC drives of
this vintage have the same problem. I included a patch to add this
drive to the two blacklists in ide-dma.c. Andre never responded to my
E-mail, and the drive still hasn't been added to the blacklists.
Am I doing something wrong? What do I need to do to get this drive
added to the blacklists?
Thanks,
Jonathan Kamens
On Sun, 25, Nov, 2001 at 06:17:08PM -0500, Jonathan Kamens spoke thus..
> How do I get a drive added to the DMA blacklists in ide-dma.c? I sent
> E-mail to Andre Hedrick in August about a drive that claims to support
> DMA but flakes out as soon as the kernel tries to use it -- the "WDC
> AC31000H". This is not surprising, since all the other WDC drives of
> this vintage have the same problem. I included a patch to add this
> drive to the two blacklists in ide-dma.c. Andre never responded to my
> E-mail, and the drive still hasn't been added to the blacklists.
>
> Am I doing something wrong? What do I need to do to get this drive
> added to the blacklists?
Actually, while this subject is being brought up, if I don't do:
/sbin/hdparm -d0 /dev/hdc
on bootup, my system locks up randomly. Looks like a DMA issue with my
hdc drive.. Details are:
/proc/ide/hdc/model:
QUANTUM FIREBALLlct08 26
Are there any other details which would be handy?
Mark
--
Mark Hymers BLFS Editor
[email protected]
On Mon, 26 Nov 2001, Mark Hymers wrote:
> On Sun, 25, Nov, 2001 at 06:17:08PM -0500, Jonathan Kamens spoke thus..
> > How do I get a drive added to the DMA blacklists in ide-dma.c? I sent
> > E-mail to Andre Hedrick in August about a drive that claims to support
> > DMA but flakes out as soon as the kernel tries to use it -- the "WDC
> > AC31000H". This is not surprising, since all the other WDC drives of
> > this vintage have the same problem. I included a patch to add this
> > drive to the two blacklists in ide-dma.c. Andre never responded to my
> > E-mail, and the drive still hasn't been added to the blacklists.
> >
> > Am I doing something wrong? What do I need to do to get this drive
> > added to the blacklists?
> Actually, while this subject is being brought up, if I don't do:
> /sbin/hdparm -d0 /dev/hdc
> on bootup, my system locks up randomly. Looks like a DMA issue with my
> hdc drive.. Details are:
>
> /proc/ide/hdc/model:
> QUANTUM FIREBALLlct08 26
This seems to confirm my doubts about Quantum lct drives' sanity. I'm
having two drives: a Quantum CX 13G, and a Maxtor 40G@5400. Both work with
UDMA33 (mb doesn't support more). When i put a QUANTUM FIREBALL lct20 20G
drive in my rack, random lockups occur. I'd put all Quantum LCT drives on
the blacklist!
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