> -----Original Message-----
> From: Valentijn Sessink [mailto:[EMAIL PROTECTED]]
> Sent: zondag 19 maart 2000 0:05
> To: [EMAIL PROTECTED]
> Subject: [LINUX-ABIT] found where it hangs (at my BP6)
>
>
> Hi all,
>
> My BP6 can be forced to hang with a DMA timeout.
>
> The error is:
> hde: timeout waiting for DMA
> ide_dmaproc: chipset supported ide_dma_timeout func only: 12
>
> ... after that, there's only silence...
>
> Now I digged into the kernel to find out that a simple single one byte
> input instruction just never returns. This is around line
> 1460 at ide.c
> in linux-2.2.15pre15+ide.2.2.15pre15, where it says
>
> startstop = ide_error(drive, "irq timeout", GET_STAT());
>
> ... the GET_STAT just hangs. GET_STAT resolves to inb_p but if you
> define REALLY_FAST_IO (which I, last resorted, did in ide.h) you get
> inb.
>
> Now I'm stuck. I don't know enough of SMP to know why a simple in
> instruction will hang the machine. Could anyone help with this?
WOW!
It seemed to me that appending "ide2=ata66" also does the trick. This switch isn't
documented, I found it in the changelog in ide.c.
Have you contacted the ide-maintainer about this? It's his job/hobby to resolve this
kinda problems...
Regards,
Arjan
PS. "noapic" gives a hanging kernel at my place, so I don't use it...
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