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SubjectRe: Linux 2.4.21-pre1 IDE
FromAlan Cox <>
Date12 Dec 2002 13:10:48 +0000
On Thu, 2002-12-12 at 01:35, Erik Andersen wrote:
>     hda: DMA disabled
>     ^^^^^^^^^^^^^^^^^
> 
> What's up with this?  For each drive in my system it claims it
> has disabled DMA.  But hdparm later reports that DMA is in fact
> enabled.  In fact, later on the kernel ever reports the drive
> as being in UDMA 100 mode...  I think these "DMA disabled"
> messages are bogus.

Cosmetic and known. It in fact turns DMA back on - quietly

>     ide2 at 0x1800-0x1807,0xac02 on irq 11
>     hda: host protected area => 1
>     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>     hda: 160836480 sectors (82348 MB) w/1863KiB Cache, CHS=10011/255/63, UDMA(100)
> 
> Now we see the funky "host protected area => 1" message.  As
> discussed earlier with Andre, this message should be removed from
> the kernel.  The message as written implies that the driv

Before 2.4.21 agreed


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