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* [3.8-{rc1,rc2}] ata1.00: failed to get Identify Device Data, Emask 0x1
@ 2013-01-04 15:40 Sedat Dilek
  2013-01-04 15:59 ` Sedat Dilek
  0 siblings, 1 reply; 7+ messages in thread
From: Sedat Dilek @ 2013-01-04 15:40 UTC (permalink / raw)
  To: Jeff Garzik; +Cc: linux-ide, LKML, Shane Huang, Aaron Lu

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...

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 -

^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2013-01-16 13:51 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-01-04 15:40 [3.8-{rc1,rc2}] ata1.00: failed to get Identify Device Data, Emask 0x1 Sedat Dilek
2013-01-04 15:59 ` Sedat Dilek
2013-01-04 16:27   ` Sedat Dilek
2013-01-05  2:20     ` Huang, Shane
2013-01-05  8:49       ` Sedat Dilek
2013-01-16 10:10       ` Sedat Dilek
2013-01-16 13:50         ` Jeff Garzik

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