sata_sil24 EH complete

[Tim Connors <tconnors@rather.puzzling.org>]

With 2.6.29, when I hotplug a western digital mybook into a 'Silicon
Image, Inc. SiI 3132 Serial ATA Raid II Controller', the drive is not
found:


*** drive failed due to user induced sillyness
...
[18676.308750] sd 0:0:0:0: [sdb] Stopping disk
[18676.308770] sd 0:0:0:0: [sdb] START_STOP FAILED
[18676.308774] sd 0:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK,SUGGEST_OK
*** drive plugged back in
[18767.821747] ata1: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0xe frozen
[18767.821756] ata1: irq_stat 0x00b40090, PHY RDY changed
[18767.821775] ata1: hard resetting link
[18774.633185] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
[18774.773591] ata1.00: applying link speed limit horkage to 1.5 Gbps
[18779.655674] ata1: hard resetting link
[18781.861074] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[18782.178565] ata1.00: configured for UDMA/100
[18782.178579] ata1: EH complete

And then nothing.  The device is still alive - if I plug it back in
through its usb interface, it comes up normally.  I know from experience
that if I was to reboot the machine, it would have come up quite nicely
from boot:

[    9.780090] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
[    9.916218] ata1.00: applying link speed limit horkage to 1.5 Gbps
[   16.981087] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[   17.291757] ata1.00: configured for UDMA/100
[   17.291874] scsi 0:0:0:0: Direct-Access     ATA      WD My Book       01.0 PQ: 0 ANSI: 5
[   17.291959] sd 0:0:0:0: [sdb] 1953525168 512-byte hardware sectors: (1.00 TB/931 GiB)
[   17.291972] sd 0:0:0:0: [sdb] Write Protect is off
[   17.291974] sd 0:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[   17.291994] sd 0:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[   17.292051] sd 0:0:0:0: [sdb] 1953525168 512-byte hardware sectors: (1.00 TB/931 GiB)
[   17.292150] sd 0:0:0:0: [sdb] Write Protect is off
[   17.292153] sd 0:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[   17.292176] sd 0:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[   17.292179]  sdb: sdb1
[   17.372927] sd 0:0:0:0: [sdb] Attached SCSI disk

This is another attempt plugging in another mybook disk:

[20662.149223] ata1: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0xe frozen
[20662.149233] ata1: irq_stat 0x00a00080, device exchanged
[20662.149252] ata1: hard resetting link
[20672.164117] ata1: softreset failed (timeout)
[20672.164139] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
[20672.164143] ata1: link online but device misclassified, retrying
[20672.164146] ata1: hard resetting link
[20674.372055] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
[20674.510116] ata1.00: applying link speed limit horkage to 1.5 Gbps
[20679.372028] ata1: hard resetting link
[20681.572066] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[20681.880986] ata1.00: configured for UDMA/100
[20681.880999] ata1: EH complete

Still no /dev/sd*

I haven't tried booting into a kernel prior to these updates:
http://lkml.org/lkml/2009/2/2/447


-- 
TimC
Yay! I have found the last bug bug bug bug bug bug bug
bug bug bug bug bug bug bug bug bug bug bug bug bug bug
bug bug bu%$@#$@#%$@#    Error: Missing Carrier Signal