RE: HD DMA disabled in 2.4.21-rc2, works fine in 2.4.20

Jeffrey W. Baker (jwbaker@acm.org)
19 May 2003 13:04:06 -0700


On Mon, 2003-05-19 at 12:56, Mudama, Eric wrote:
> # CONFIG_BLK_DEV_IDEDMA_FORCED is not set
>
> I think that is the offending line?
>
> can you enable DMA transfer modes on the drive using hdparm?

Why should force be enabled? Forced sounds like a last resort. If you
read this thread you will see that hdparm isn't working. It returns
EPERM.

I was using Via IDE chipset and, yes, I had configured the kernel for
VIA support. That's why it worked in 2.4.20. But it stopped working in
2.4.21-rc.

Meanwhile, I have switched to 2.4.21-rc-ac, and dumped the hardware in
favor of Intel i865, and DMA is working again.

-jwb

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/