# Re: \[PATCH v9 3/5\] libata: support concurrent positioning ranges log

- From: Geert Uytterhoeven \<geert@linux-m68k.org\>
- Date: 2021-11-02 10:41:01 
- List: linux-ide
- Page: https://ratatoskr.run/linux-ide/2021/11/6406775
- Thread: https://ratatoskr.run/linux-block/2021/10/6406621/t.md

```text
	Hi Damien,

On Wed, 27 Oct 2021, Damien Le Moal wrote:
> Add support to discover if an ATA device supports the Concurrent
> Positioning Ranges data log (address 0x47), indicating that the device
> is capable of seeking to multiple different locations in parallel using
> multiple actuators serving different LBA ranges.
>
> Also add support to translate the concurrent positioning ranges log
> into its equivalent Concurrent Positioning Ranges VPD page B9h in
> libata-scsi.c.
>
> The format of the Concurrent Positioning Ranges Log is defined in ACS-5
> r9.
>
> Signed-off-by: Damien Le Moal <redacted>

Thanks for your patch, which is now commit fe22e1c2f705676a ("libata:
support concurrent positioning ranges log") upstream.

During resume from s2ram on Renesas Salvator-XS, I now see more scary
messages than before:

     ata1: link resume succeeded after 1 retries
     ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
    +ata1.00: qc timeout (cmd 0x2f)
    +ata1.00: Read log page 0x00 failed, Emask 0x4
    +ata1.00: ATA Identify Device Log not supported
    +ata1.00: failed to set xfermode (err_mask=0x40)
     ata1: link resume succeeded after 1 retries
     ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
    +ata1.00: ATA Identify Device Log not supported
    +ata1.00: ATA Identify Device Log not supported
     ata1.00: configured for UDMA/133

I guess this is expected?

The hard drive (old Maxtor 6L160M0 that received a third life as a test
bed for Renesas SATA regression testing) seems to still work fine.

Thanks!

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
```