Martin Mokrejs wrote:
>
>
> Jeff Garzik wrote:
>> On 04/18/2012 01:10 PM, Martin Mokrejs wrote:
>>> Fix: I got my 3TB disk detected by this single command:
>>>
>>> # echo on> /sys/devices/pci0000:00/0000:00:1f.2/ata6/power/control
>>> #
>>>
>>> This is a Dell Vostro 3550 with A09 BIOS. Same happend with 3.4-rc3 kernel.
>>>
>>> I can do some more testing if you want me to.
>>> Best,
>>> Martin
>>
>>
>> Can you test this one-line patch from Lin Ming? Hopefully there is zero sysfs twiddling required with this one...
>>
>> --- a/drivers/ata/libata-transport.c
>> +++ b/drivers/ata/libata-transport.c
>> @@ -294,6 +294,7 @@ int ata_tport_add(struct device *parent,
>> device_enable_async_suspend(dev);
>> pm_runtime_set_active(dev);
>> pm_runtime_enable(dev);
>> + pm_runtime_forbid(dev);
>>
>> transport_add_device(dev);
>> transport_configure_device(dev);
There is one more minor issue. I cannot get my disk re-dectected at 3Gbps. Here is when I plugged it in
for the very first time after bootup (plain 3.4-rc3 with the above one-line fix):
[ 146.876489] ata6: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0xe frozen
[ 146.876499] ata6: irq_stat 0x00400040, connection status changed
[ 146.876508] ata6: SError: { PHYRdyChg CommWake DevExch }
[ 146.876527] ata6: hard resetting link
[ 147.619956] ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 147.869349] ata6.00: ATA-8: ST3000DM001-9YN166, CC4C, max UDMA/133
[ 147.869360] ata6.00: 5860533168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
[ 147.870126] ata6.00: configured for UDMA/133
[ 147.870131] ata6: EH complete
[ 147.870220] scsi 5:0:0:0: Direct-Access ATA ST3000DM001-9YN1 CC4C PQ: 0 ANSI: 5
[ 147.870391] sd 5:0:0:0: [sdc] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB)
[ 147.870393] sd 5:0:0:0: [sdc] 4096-byte physical blocks
[ 147.870396] sd 5:0:0:0: Attached scsi generic sg3 type 0
[ 147.870434] sd 5:0:0:0: [sdc] Write Protect is off
[ 147.870436] sd 5:0:0:0: [sdc] Mode Sense: 00 3a 00 00
[ 147.870460] sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 147.904848] sdc: sdc1
[ 147.905196] sd 5:0:0:0: [sdc] Attached SCSI disk
Here is what happens on re-plug of the device. It is a 3.5" drive and the line
[ 617.838013] ata6: hard resetting link
happens too early. I can hear the drive is still spinning up, it can't be ready yet.
I think the delay should be increased.
[ 617.837966] ata6: exception Emask 0x10 SAct 0x0 SErr 0x4050002 action 0xe frozen
[ 617.837976] ata6: irq_stat 0x00400040, connection status changed
[ 617.837984] ata6: SError: { RecovComm PHYRdyChg CommWake DevExch }
[ 617.838004] ata6: limiting SATA link speed to 1.5 Gbps
[ 617.838013] ata6: hard resetting link
[ 623.610941] ata6: link is slow to respond, please be patient (ready=0)
[ 627.864604] ata6: COMRESET failed (errno=-16)
[ 627.864615] ata6: hard resetting link
[ 629.931538] ata6: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 629.932355] ata6.00: ATA-8: ST3000DM001-9YN166, CC4C, max UDMA/133
[ 629.932365] ata6.00: 5860533168 sectors, multi 0: LBA48 NCQ (depth 31/32), AA
[ 629.933170] ata6.00: configured for UDMA/133
[ 629.951629] ata6: EH complete
[ 629.951700] scsi 5:0:0:0: Direct-Access ATA ST3000DM001-9YN1 CC4C PQ: 0 ANSI: 5
[ 629.951816] sd 5:0:0:0: [sdc] 5860533168 512-byte logical blocks: (3.00 TB/2.72 TiB)
[ 629.951819] sd 5:0:0:0: [sdc] 4096-byte physical blocks
[ 629.951842] sd 5:0:0:0: Attached scsi generic sg3 type 0
[ 629.951875] sd 5:0:0:0: [sdc] Write Protect is off
[ 629.951877] sd 5:0:0:0: [sdc] Mode Sense: 00 3a 00 00
[ 629.951901] sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 629.995970] sdc: sdc1
[ 629.996359] sd 5:0:0:0: [sdc] Attached SCSI disk
Martin
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