Re: [PATCH 2.6.22-rc5] libata: add HTS541616J9SA00 to NCQ blacklist

[Petr Vandrovec <vandrove@vc.cvut.cz>]

Robert Hancock wrote:
> Tejun Heo wrote:
> > Petr Vandrovec wrote:
> > > > > > diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
> > > > > > index adfae9d..fbca8d8 100644
> > > > > > --- a/drivers/ata/libata-core.c
> > > > > > +++ b/drivers/ata/libata-core.c
> > > > > > @@ -3803,6 +3803,7 @@ static const struct ata_blacklist_entry
> > > > > > ata_device_blacklist [] = {
> > > > > >      /* Drives which do spurious command completion */
> > > > > >      { "HTS541680J9SA00",    "SB2IC7EP",    ATA_HORKAGE_NONCQ, },
> > > > > >      { "HTS541612J9SA00",    "SBDIC7JP",    ATA_HORKAGE_NONCQ, },
> > > > > > +    { "Hitachi HTS541616J9SA00", "SB4OC70P", ATA_HORKAGE_NONCQ, },
> > > > > >      { "WDC WD740ADFD-00NLR1", NULL,        ATA_HORKAGE_NONCQ, },
> > > > > >  
> > > > > >      /* Devices with NCQ limits */
> > > > > Is that the right ID string? Strange that that one has Hitachi at the
> > > > > front and the others don't..
> > > > Yeah, I realized that and asked Enrico about it.  :-)
> > > I think that "new" one is correct, while old ones are incorrect (unless
> > > it uses strstr()) - all my Hitachis claim to be Hitachis - like this one
> > > (which seems to work fine with NCQ):
> > >
> > > gwy:~# hdparm -i /dev/sda
> > >
> > > /dev/sda:
> > >
> > >  Model=Hitachi HDT725032VLA380                 , FwRev=V54OA52A,
> > > SerialNo=      VFA200R208LH5J
> > >  Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> >
> > Hmmm... The last one (HTS541612J9SA00) is taken directly from hdparm
> > output, and I think I verified the patch with the reporter.  Hmm... Can
> > anyone verify these module strings?
>
> Could well be that they've started attaching Hitachi to the ID strings 
> now.. In the past it hasn't seemed to have been Hitachi's (and IBM's 
> before that) practice to have it there, but maybe they see the advantage 
> of being able to figure out who made the drive now :-)

Perhaps ones sold directly by Hitachi are Hitachi, while ones sold 
through OEMs are no-name?
							Petr




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