Re: [Bugme-new] [Bug 12351] New: sata_nv hotplug not work in 2.6.27.10

[Robert Hancock <hancockr@shaw.ca>]

(CCing Tejun)

Andrew Morton wrote:
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
> 
> On Sat,  3 Jan 2009 13:12:09 -0800 (PST)
> bugme-daemon@bugzilla.kernel.org wrote:
> 
>> http://bugzilla.kernel.org/show_bug.cgi?id=12351
>>
>>            Summary: sata_nv hotplug not work in 2.6.27.10
>>            Product: IO/Storage
>>            Version: 2.5
>>      KernelVersion: 2.6.27.10
>>           Platform: All
>>         OS/Version: Linux
>>               Tree: Mainline
>>             Status: NEW
>>           Severity: normal
>>           Priority: P1
>>          Component: Serial ATA
>>         AssignedTo: jgarzik@pobox.com
>>         ReportedBy: gpanco@tiscali.it
>>
>>
>> Latest working kernel version:2.6.27
>> Earliest failing kernel version:2.6.27.10
> 
> A regression in -stable.

Does reverting this patch help?

http://git.kernel.org/?p=linux/kernel/git/hpa/linux-2.6-allstable.git;a=commit;h=814eb57e1799337d9fbb68f5d838afa507dc014e

> 
>> Hardware Environment:x86 ASUS M2N-E

OK, this is an MCP61 board. We're now using softreset instead of 
hardreset on hotplug and apparently that doesn't work. Thing is that:

http://bugzilla.kernel.org/show_bug.cgi?id=11195

reported that hardreset was borked on that controller. Seems kind of 
contradictory..

/if only NVidia could be consistent in its hardware bugs..

>> Problem Description: sata_nv hotplug dont work in 2.6.27.10
>>
>> Steps to reproduce:
>>
>> when I hotplug my sata disk dmesg say:
>>
>> - kernel 2.6.27:
>>
>> ta2: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xe frozen
>> ata2: SError: { PHYRdyChg CommWake }
>> ata2: hard resetting link
>> ata2: link is slow to respond, please be patient (ready=-19)
>> ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
>> ata2.00: ATA-7: ST3320620AS, 3.AAJ, max UDMA/133
>> ata2.00: 625142448 sectors, multi 0: LBA48 NCQ (depth 31/32)
>> ata2.00: configured for UDMA/133
>> ata2: EH complete
>> scsi 1:0:0:0: Direct-Access     ATA      ST3320620AS      3.AA PQ: 0 ANSI: 5
>> sd 1:0:0:0: [sdb] 625142448 512-byte hardware sectors (320073 MB)
>> sd 1:0:0:0: [sdb] Write Protect is off
>> sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
>> sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support
>> DPO or FUA
>> sd 1:0:0:0: [sdb] 625142448 512-byte hardware sectors (320073 MB)
>> sd 1:0:0:0: [sdb] Write Protect is off
>> sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
>> sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support
>> DPO or FUA
>>  sdb: sdb1 sdb2 < sdb5 sdb6 sdb7 sdb8 sdb9 sdb10 sdb11 sdb12 sdb13 sdb14 sdb15
>> sd 1:0:0:0: [sdb] Attached SCSI disk
>>
>>
>> - kernel 2.6.27.10:
>>
>> ata2: exception Emask 0x10 SAct 0x0 SErr 0x150000 action 0xe frozen
>> ata2: SError: { PHYRdyChg CommWake Dispar }
>> ata2: link is slow to respond, please be patient (ready=0)
>> ata2: device not ready (errno=-16), forcing hardreset
>> ata2: soft resetting link
>> ata2: link is slow to respond, please be patient (ready=0)
>> ata2: SRST failed (errno=-16)
>> ata2: soft resetting link
>> ata2: link is slow to respond, please be patient (ready=0)
>> ata2: SRST failed (errno=-16)
>> ata2: soft resetting link
>> ata2: link is slow to respond, please be patient (ready=0)
>> ata2: SRST failed (errno=-16)
>> ata2: limiting SATA link speed to 1.5 Gbps
>> ata2: soft resetting link
>> ata2: SRST failed (errno=-16)
>> ata2: reset failed, giving up
>> ata2: EH complete
>>
> 
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