Re: DMA problems with ICH5 in ATA mode

[Jeff Garzik]

Roy Sigurd Karlsbakk wrote:
> hi
>
> I have a disk connected to one of the below controllers in ATA mode, but 
> I can't enable DMA on it. Intel ATA support is in kernel, but when 
> hdparm -d1 /dev/hdc I get the following (extracted from strace)
>
> write(4, " HDIO_SET_DMA failed: Operation "..., 46 HDIO_SET_DMA failed: 
> Operation not permitted

You either need to (a) disable legacy (combined) mode, (b) use piix 
rather than generic IDE driver, or (c) enable libata for your SATA.

	Jeff



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