Re: Unknown SATA PIIX PCI device ID 0x29b6

Tejun Heo
2008-03-09T05:14:53Z

Guennadi Liakhovetski wrote:
> On Fri, 7 Mar 2008, Tejun Heo wrote:
>
>>> Looks like almost a minute to me? On another occurence I see about 1.5
>>> minutes, then "port is slow to respond, please be patient (Status 0x80)"
>>> has been repeated 3 times. On cold-plug also 3 times, I think, about the
>>> same time then (time is not updated in the log).
>> I see. Does the attached patch make any difference?
>
> diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
> index 4fbcce7..abebdcc 100644
> --- a/drivers/ata/libata-core.c
> +++ b/drivers/ata/libata-core.c
> @@ -6712,6 +6712,7 @@ int sata_link_init_spd(struct ata_link *link)
> spd = (scontrol >> 4) & 0xf;
> if (spd)
> link->hw_sata_spd_limit &= (1 << spd) - 1;
> + link->hw_sata_spd_limit = 1;
>
> ata_force_spd_limit(link);
>
> Hm, this would force 1.5Gbps on all ports and devices, right? Cannot I
> just boot with "libata.force=4:1.5Gbps"?

Yeap, you can do that. Wasn't sure you were using .25-rc or .24.

Thanks.

--
tejun