Reading other similar reports on this issue, I attach a dmesg that shows
the HSM violations/NCQ being disabled.

In addition,

# hdparm -i /dev/sda

/dev/sda:

 Model=HITACHI HTS541616J9SA00                 , FwRev=SB4IC7UP,
SerialNo=...
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=DualPortCache, BuffSize=7516kB, MaxMultSect=16, MultSect=?16?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 
 AdvancedPM=yes: disabled (255) WriteCache=enabled
 Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1:
ATA/ATAPI-2,3,4,5,6,7

 * signifies the current active mode

Simos

On Tue, 2007-11-06 at 01:50 +0000, Simos Xenitellis wrote:
> Hi,
> I'ld like to add another disk in the blacklist regarding NCQ
> (libata-core.c).
> 
> It is the disk model "HITACHI HTS541616J9SA00" with rev "SB4IC7UP".
> 
> Currently there is a similar description,
>          { "Hitachi HTS541616J9SA00", "SB4OC70P", ATA_HORKAGE_NONCQ, },
> Notice the difference between SB4IC7UP and SB4OC70P.
> 
> I have verified that the model name and rev are "HITACHI
> HTS541616J9SA00" and "SB4IC7UP" by adding printks in the kernel. The
> word HITACHI is all caps.
> Blacklisting does eliminate NCQ-related disk errors.
> 
> Simos
>