linux-kernel - Re: [3.8-{rc1,rc2}] ata1.00: failed to get Identify Device Data, Emask 0x1

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Date:	Fri, 4 Jan 2013 16:59:18 +0100
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Jeff Garzik <jgarzik@...ox.com>
Cc:	linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Shane Huang <shane.huang@....com>,
	Aaron Lu <aaron.lu@...el.com>
Subject: Re: [3.8-{rc1,rc2}] ata1.00: failed to get Identify Device Data,
 Emask 0x1

On Fri, Jan 4, 2013 at 4:40 PM, Sedat Dilek <sedat.dilek@...il.com> wrote:
> Hi,
>
> I noticed messages like the following in my syslogs with Linux
> v3.8-rc1 and v3.8-rc2:
>
> ata1.00: failed to get Identify Device Data, Emask 0x1
>
> In this Samsung ultrabook there exists a small SSD and a 500GiB HDD.
> I had no look which of the two is "ata1" or "ata2".
> NOTE: With ata2 I do not see the messages.
> I haven't checked older Linux-kernel versions.
>
> I followed the thread in [1] a bit and Aaron Lu pointed to the commit
> which causes these messages.
> Shane wanted to submit a patch [3] which I first didn't found.
> But I guess it's the one from [4], building right now...
>

[ monologue ]

YES, that patch [4] fixes the problem here.
ata1 is the internal HDD drive and ata2 the SSD.

Jeff, didn't you do a git-pull-request-for-3.8 with "upstream-linus" GIT branch?

- Sedat -

[1] http://git.kernel.org/?p=linux/kernel/git/jgarzik/libata-dev.git;a=shortlog;h=refs/tags/upstream-linus

P.S.: Excerpts from new kernel's dmesg checking ATA stuff...

$ dmesg | egrep -i 'ata1|ata2|libata|ahci|scsi'
[    0.172529] SCSI subsystem initialized
[    0.172532] ACPI: bus type scsi registered
[    0.172577] libata version 3.00 loaded.
[    0.273212] Block layer SCSI generic (bsg) driver version 0.4
loaded (major 252)
[    0.286268] ahci 0000:00:1f.2: version 3.0
[    0.286329] ahci 0000:00:1f.2: irq 40 for MSI/MSI-X
[    0.286368] ahci: SSS flag set, parallel bus scan disabled
[    0.300666] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 6
Gbps 0x1b impl SATA mode
[    0.300682] ahci 0000:00:1f.2: flags: 64bit ncq sntf ilck stag pm
led clo pio slum part ems sxs apst
[    0.300698] ahci 0000:00:1f.2: setting latency timer to 64
[    0.324967] scsi0 : ahci
[    0.325034] scsi1 : ahci
[    0.325091] scsi2 : ahci
[    0.325148] scsi3 : ahci
[    0.325202] scsi4 : ahci
[    0.325255] scsi5 : ahci
[    0.325288] ata1: SATA max UDMA/133 abar m2048@...0708000 port
0xf0708100 irq 40
[    0.325294] ata2: SATA max UDMA/133 abar m2048@...0708000 port
0xf0708180 irq 40
[    0.644494] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    0.645724] ata1.00: ATA-8: Hitachi HTS545050A7E380, GG2OA6C0, max UDMA/133
[    0.645742] ata1.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[    0.646987] ata1.00: configured for UDMA/133
[    0.647248] scsi 0:0:0:0: Direct-Access     ATA      Hitachi
HTS54505 GG2O PQ: 0 ANSI: 5
[    0.647419] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    0.657964] sd 0:0:0:0: [sda] Attached SCSI disk
[    0.964266] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    0.964889] ata2.00: ATA-8: SanDisk iSSD P4 16GB, SSD 9.14, max UDMA/133
[    0.964896] ata2.00: 31277232 sectors, multi 1: LBA48
[    0.965579] ata2.00: configured for UDMA/133
[    0.965794] scsi 1:0:0:0: Direct-Access     ATA      SanDisk iSSD
P4  SSD  PQ: 0 ANSI: 5
[    0.965955] sd 1:0:0:0: Attached scsi generic sg1 type 0
[    0.967281] sd 1:0:0:0: [sdb] Attached SCSI disk

[ /monologue ]

> Hope this helps a bit to narrow down the problem.
>
> Regards,
> - Sedat -
>
> [1] https://lkml.org/lkml/2012/10/16/557
> [2] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=65fe1f0f66a57380229a4ced844188103135f37b
> [3] https://lkml.org/lkml/2012/11/16/369
> [4] http://git.kernel.org/?p=linux/kernel/git/jgarzik/libata-dev.git;a=patch;h=de90cd71f68e947d3bd6c3f2ef5731ead010a768
>
> P.S.: Excerpts from the quoted commit:
>
> [ drivers/ata/libata-core.c ]
> ...
> +               /* check and mark DevSlp capability */
> +               if (ata_id_has_devslp(dev->id))
> +                       dev->flags |= ATA_DFLAG_DEVSLP;
> +
> +
> +               /* Obtain SATA Settings page from Identify Device Data Log,
> +                * which contains DevSlp timing variables etc.
> +                * Exclude old devices with ata_id_has_ncq()
> +                */
> +               if (ata_id_has_ncq(dev->id)) {
> +                       err_mask = ata_read_log_page(dev,
> +                                                    ATA_LOG_SATA_ID_DEV_DATA,
> +                                                    ATA_LOG_SATA_SETTINGS,
> +                                                    dev->sata_settings,
> +                                                    1);
> +                       if (err_mask)
> +                               ata_dev_dbg(dev,
> +                                           "failed to get Identify
> Device Data, Emask 0x%x\n",
> +                                           err_mask);
> +               }
> +
> - EOT -
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