Ken Brownfield wrote:
> There wasn't a specific MAINTAINER for this stuff, other than perhaps
> Andre Hedrick by proxy, so I decided it might be best to post this
> directly.
>
> I have a lot of ServerWorks OSB4 IDE hardware, which has the annoyingly
> suboptimal behavior of corrupting filesystems when DMA is active.
> Unfortunately, serverworks.c (in recent 2.4, at least) does not honor
> the CONFIG_IDEDMA_AUTO config option -- it turns dma on only unless
> "ide=nodma" is set on the kernel command line.
>
> Personally, I think the correct behavior is for the subdrivers to honor
> this config value. However, only VIA behaves in this way, and PIIX only
> because of its funky CONFIG_PIIX_TUNING config. This obviates having to
> modify lilo.conf (or similar) on all machines, and having to remember
> to do so, etc etc.
>
> The alternative is that, somewhat unintuitively, the correct behavior is
> for the subdrivers to make their own non-CONFIGurable decisions on DMA.
> In this case, VIA and PIIX should be corrected, I would think.
>
> In any case, I've appended the patch I'm using to be able to turn off
> auto-DMA at config-time rather than run-time for ServerWorks. One
> alternative is to shed this code altogether, since ide-pci.c seems to
> set a rational default.
I think (not 100% becouse not re-checked against the code),
you could just have removed the lines
if (!noautodma)
hwif->autodma = 1;
and all should be well ;-).
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This archive was generated by hypermail 2b29 : Thu Feb 28 2002 - 21:00:26 EST