PDA (Clie) USB sync fails with 2.6.25, OK with 2.6.34.1. versionsof visor.c visor.h

[Robert Gadsdon]

Sony Clie USB sync (Jpilot and Kpilot) has been OK for years, but since 
2.6.35 (and 2.6.35.6) has failed.
2.6.34.1 (and earlier) works OK.
With 2.6.35, device files are created OK, and LSUSB shows PDA correctly:

# ll /dev/ttyU*
crw-rw---- 1 root uucp 188, 0 Oct  9 17:08 /dev/ttyUSB0
crw-rw---- 1 root uucp 188, 1 Oct  9 17:08 /dev/ttyUSB1

# lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 04a9:10c9 Canon, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 002: ID 054c:0144 Sony Corp. Clie PEG-TH55 PDA
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 004: ID 0a81:0101 Chesen Electronics Corp. Keyboard
Bus 003 Device 002: ID 046d:c52b Logitech, Inc.
Bus 003 Device 003: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

lsusb -vv seems to contain identical values for both 2.6.34.1 and 2.6.35:
# lsusb -vv
Bus 006 Device 003: ID 054c:0144 Sony Corp. Clie PEG-TH55 PDA
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x054c Sony Corp.
  idProduct          0x0144 Clie PEG-TH55 PDA
  bcdDevice            1.00
  iManufacturer           1 Palm. Inc.
  iProduct                2 Palm Handheld
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           46
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0xc0
      Self Powered
    MaxPower                2mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           4
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x05  EP 5 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0001
  Self Powered

But both Jpilot and Kpilot fail to connect-
(timeout, no activity, 'unable to access /dev/ttyUSB0')

Workaround is to copy the 2.6.34.1 versions of visor.c and visor.h to 
the 2.6.35 (or 2.6.35.6) code base, and recompile/reinstall.   Then 
everything works again.

Problem has been reproduced with 2 different Clie PDAs..

Robert Gadsdon.
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