[Bug 982213] Re: SG_IO v3 "ATA IDENTIFY DEVICE" command from ata_id hoses bridge

[Tormod Volden]

debug from drivers/usb/storage/transport.c

 [  166.745112] cypress_atacb.c sending command ec
 [  166.745117] usb-storage: Bulk Command S 0x43425355 T 0x16 L 512 F 128 Trg 0 LUN 0 CL 16
 [  166.745120] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
 [  166.745196] usb-storage: Status code 0; transferred 31/31
 [  166.745199] usb-storage: -- transfer complete
 [  166.745202] usb-storage: Bulk command transfer result=0
 [  166.745205] usb-storage: usb_stor_bulk_transfer_sglist: xfer 512 bytes, 1 entries
 [  166.745318] usb-storage: Status code -121; transferred 13/512
 [  166.745321] usb-storage: -- short read transfer
 [  166.745324] usb-storage: Bulk data transfer result 0x1
 [  166.745326] usb-storage: Attempting to get CSW...
 [  166.745329] usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes
 [  197.549055] usb-storage: usb_stor_stop_transport called
 [  197.549059] usb-storage: -- cancelling URB
 [  197.549181] usb-storage: Status code -104; transferred 0/13
 [  197.549184] usb-storage: -- transfer cancelled
 [  197.549187] usb-storage: Bulk status result = 4
 [  197.549190] us->transport returned 0x03
 [  197.549192] usb-storage: -- command was aborted
 [  197.621166] usb 1-1.1: reset high-speed USB device number 6 using ehci_hcd

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Title:
  SG_IO v3 "ATA IDENTIFY DEVICE" command from ata_id hoses bridge

Status in “udev” package in Ubuntu:
  New

Bug description:
  I have Ubuntu 12.04 installed on an external hard drive, where the
  disk enclosure has a Cypress CY7C68300A EZ-USB AT2 USB 2.0 to
  ATA/ATAPI bridge.

  At boot, the udev rules probes the drive with /lib/udev/ata_id and
  this makes the bridge lock up and the disk unavailable. After 30
  seconds a scsi reset is issued and the drive comes back. I have traced
  this down to the "v3" fallback of extras/ata_id/ata_id.c:187. When
  patching this ioctl away everything is fine.

  Another workaround would be to change the udev rules to not call
  ata_id when this particular bridge is detected. ata_id does not return
  anything for this drive on my setup anyway.

  lsusb:
  Bus 002 Device 003: ID 04b4:6830 Cypress Semiconductor Corp. CY7C68300A EZ-USB AT2 USB 2.0 to ATA/ATAPI

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