The SynCE project has received a number of reports about crashes with the "ipaq"
driver and Windows Mobile 2005 devices. The Dell Axim X51v is such a device.

Contrary to all devices known to work with the "ipaq" driver, these have
bDeviceClass, bDeviceSubClass and bDeviceProtocol set as in the
/proc/bus/usb/devices output below:

T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  9 Spd=12  MxCh= 0
D:  Ver= 2.00 Cls=ef(unk. ) Sub=01 Prot=01 MxPS=16 #Cfgs=  1
P:  Vendor=0bb4 ProdID=0b01 Rev= 0.00
S:  Manufacturer=MSFT
S:  Product=PocketPC USB Sync
C:* #Ifs= 2 Cfg#= 1 Atr=c0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=ef(unk. ) Sub=01 Prot=01 Driver=(none)
E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=1ms
I:  If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=03(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

If the "ipaq" driver is loaded with the vendor/product identifier above,
and the device is connected, the module crashes.

There is a bug in the SynCE bug tracker for this:

https://sourceforge.net/tracker/index.php?func=detail&aid=1332550&group_id=30550&atid=399601

I have compared SnoopyPro output from a working device with output from
these new devices and they are quite different. (SnoopPro .usblog files
available on request.)

The latest version of the ActiveSync software contains a file
WceRndis.inf with the following comment. It makes me 100% sure that Windows
Mobile 2005 devices uses some variant of the RNDIS over USB protocol:


; WceRndis.INF -- This is the inf installation script for the stand-alone
;                  release of RNDIS-over-USB host driver for Windows Mobile USB
Function devices.

.
.
.

[WindowsCeDevices]
%WindowsCeDevice%    = RNDIS, USB\Class_EF&SubClass_01&Prot_01


The above is a modified version of the following mail I sent to the
linux-usb-devel list and Ganesh Varadarajan the other day:

http://marc.theaimsgroup.com/?l=linux-usb-devel&m=113079438715563


My recommendation is to start working on getting these devices working with the
host RNDIS over USB code in usbnet. 

SynCE user Peter McClure (owner of a "HTC Universal" device) has been in some
contact with David Brownell but has not been able to get his device working with
usbnet yet.

I expect that the primary reason for usbnet not working with these devices is
that usbnet expects RNDIS over USB devices to have
bDeviceClass/bDeviceSubClass/bDeviceProtocol set to 02/00/00 and not ef/01/01.
There may of course be other differences too...

After the patch by V Ganesh to ipaq.c I get these messages in dmesg when I do:

synce-serial-config ttyUSB0
synce-serial-start

and 

synce-serial-config ttyUSB1
synce-serial-start

The control urb error is from the ttyUSB1 case.

ipaq 2-1.4:1.1: PocketPC PDA converter detected
usb 2-1.4: PocketPC PDA converter now attached to ttyUSB1
CSLIP: code copyright 1989 Regents of the University of California
PPP generic driver version 2.4.2
ip_tables: (C) 2000-2002 Netfilter core team
drivers/usb/serial/ipaq.c: ipaq_open - This device doesn't have the correct
endpoints

drivers/usb/serial/ipaq.c: ipaq_open - failed doing control urb, error -32




However if I do:

plug in axim
synce-serial-config ttyUSB0
synce-serial-start
unplug axim

Everything works fine.

Doing the same process, plugging in, config with ttyUSB1, serial-start and
unplugging results in this oops when the axim is unplugged:

ipaq 2-1.4:1.1: PocketPC PDA converter detected
usb 2-1.4: PocketPC PDA converter now attached to ttyUSB1
drivers/usb/serial/ipaq.c: ipaq_open - failed doing control urb, error -32
usb 2-1.4: USB disconnect, address 6
PocketPC PDA ttyUSB0: PocketPC PDA converter now disconnected from ttyUSB0
ipaq 2-1.4:1.0: device disconnected
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at kernel/workqueue.c:104
invalid operand: 0000 [1] 
CPU 0 
Modules linked in: iptable_filter ip_tables ppp_async ppp_generic slhc crc_ccitt
ipv6 ns558 gameport parport_pc parport floppy pcspkr shpchp pci_hotplug generic
amd74xx snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss
snd_pcm snd_timer snd soundcore snd_page_alloc ehci_hcd ohci_hcd i2c_nforce2
eth1394 forcedeth ohci1394 reiserfs raid1 md_mod rtc tsdev w83627hf hwmon_vid
i2c_isa i2c_core ipaq usbserial sbp2 ieee1394 psmouse ide_generic ide_disk
ide_cd ide_scsi ide_core sr_mod cdrom sd_mod sg aic7xxx scsi_transport_spi unix
sata_nv libata scsi_mod ext3 jbd ext2 mbcache
Pid: 145, comm: khubd Not tainted 2.6.14 #1
RIP: 0010:[<ffffffff8014170a>] <ffffffff8014170a>{queue_work+26}
RSP: 0000:ffff81003f8dfcf8  EFLAGS: 00010286
RAX: ffff810036fe0a10 RBX: 0000000000000000 RCX: ffff81003de692c0
RDX: 0000000000000000 RSI: ffff810036fe0a08 RDI: ffff81003fe25180
RBP: ffff81003de699c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff80236890 R12: ffff81003de699c0
R13: ffff810037e62420 R14: ffff81003d766400 R15: 0000000000000100
FS:  00002aaaab0606d0(0000) GS:ffffffff803d3800(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00000000005bb850 CR3: 00000000362ce000 CR4: 00000000000006e0
Process khubd (pid: 145, threadinfo ffff81003f8de000, task ffff81003f8dd530)
Stack: ffffffff80236890 ffffffff8818fe49 ffff810037e62490 ffffffff881a23e0 
       ffff810037e62400 ffffffff881a2420 ffff810037e62420 ffffffff802499c3 
       ffff810037e624f0 ffff810037e62420 
Call Trace:<ffffffff80236890>{klist_devices_put+0}
<ffffffff8818fe49>{:usbserial:usb_serial_disconnect+105}
       <ffffffff802499c3>{usb_unbind_interface+83}
<ffffffff8023630b>{__device_release_driver+107}
       <ffffffff8023661d>{device_release_driver+45}
<ffffffff80235d42>{bus_remove_device+146}
       <ffffffff80234ca7>{device_del+55} <ffffffff8024f615>{usb_disable_device+165}
       <ffffffff80249f61>{usb_disconnect+193} <ffffffff8024c589>{hub_thread+873}
       <ffffffff80145790>{autoremove_wake_function+0}
<ffffffff8024c220>{hub_thread+0}
       <ffffffff8014559d>{kthread+205} <ffffffff8010f3c2>{child_rip+8}
       <ffffffff801e9b60>{vgacon_cursor+0}
<ffffffff80145370>{keventd_create_kthread+0}
       <ffffffff801454d0>{kthread+0} <ffffffff8010f3ba>{child_rip+0}
       

Code: 0f 0b 68 f8 6c 2e 80 c2 68 00 e8 e7 fb ff ff ba 01 00 00 00 
RIP <ffffffff8014170a>{queue_work+26} RSP <ffff81003f8dfcf8>

Same with me. Loaded ipaq with vendor=0x413c product=0x4011 (Dell Axim x51v) and
it created /dev/tts/USB0 and /dev/tts/USB1. I'm using 2.6.13-gentoo-r3.

And ooops:

hades ~ # synce-serial-config /dev/tts/USB0

You can now run synce-serial-start to start a serial connection.

hades ~ # synce-serial-start

synce-serial-start is now waiting for your device to connect

hades ~ # Oops: 0002 [#1]
PREEMPT
Modules linked in: ppp_async ppp_generic slhc ipaq usbserial snd_pcm_oss
snd_mixer_oss snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device
snd_hda_intel snd_hda_codec snd_pcm snd_timer snd soundcore snd_page_alloc
ipw2200 ieee80211 ieee80211_crypt
CPU:    0
EIP:    0060:[<e0ddd188>]    Not tainted VLI
EFLAGS: 00010286   (2.6.13-gentoo-r3)
EIP is at ipaq_open+0x188/0x360 [ipaq]
eax: ddc88000   ebx: ddde4560   ecx: ddeea400   edx: 00000000
esi: 00000100   edi: dda11ae0   ebp: dda11af4   esp: de7bbe78
ds: 007b   es: 007b   ss: 0068
Process pppd (pid: 9868, threadinfo=de7ba000 task=df24a590)
Stack: dfe8f880 000000d0 00000000 000000d0 e0e8d50d 00000000 00000000 00000000
       00000001 ddf909c0 ddf909c0 ddeea400 dd86b000 0bc00000 e0e8a422 ddeea400
       df0b2540 df0b2540 e0e8a370 df0b2540 00000000 c022b6ed dd86b000 df0b2540
Call Trace:
 [<e0e8a422>] serial_open+0xb2/0x100 [usbserial]
 [<e0e8a370>] serial_open+0x0/0x100 [usbserial]
 [<c022b6ed>] tty_open+0x26d/0x310
 [<c016999a>] chrdev_open+0xba/0x190
 [<c015f4fa>] dentry_open+0x11a/0x1a0
 [<c015f3d8>] filp_open+0x68/0x70
 [<c015f5de>] get_unused_fd+0x5e/0xd0
 [<c015f71f>] sys_open+0x4f/0xe0
 [<c01031c5>] syscall_call+0x7/0xb
Code: 44 24 04 a1 c4 22 3e c0 89 04 24 e8 33 d4 36 df 8b 4c 24 3c 85 c0 89 41 38
0f 84 4b 01 00 00 8b 44 24 3c 8b 50 30 89 c1 8b 40 28 <89> 42 2c 8b 51 40 8b 41
38 89 42 2c 8b 41 30 c7 40 34 00 10 00

Can someone send me the patch that fixes the oops from happening that
I saw references to?

I just created the SynCE-WindowsMobile5 mailing list. If you are interested in
Windows Mobile 5 support in Linux and SynCE, join it and discuss with other WM5
device owners how to proceed in order to support these devices.
 
https://lists.sourceforge.net/lists/listinfo/synce-windowsmobile5

No response in 2 months, closing.  If this is still a problem, please reopen
with the requested information.

Hm, you reopened it, but did not provide any new information.

Setting to NEED INFO until you do...

Kernel 2.6.16.13 (Suse 10.1)

trying to connect an HP ipaq rx 1950 with windows mobile 5 -> I guess this
belongs here.

synce-serial-config ttyUSB0 , synce-serial-start

leads to:

Jun 21 17:34:30 linux-h9s7 kernel: PPP generic driver version 2.4.2
Jun 21 17:34:30 linux-h9s7 synce-serial-start: Executing /usr/sbin/pppd call
synce-device
Jun 21 17:34:30 linux-h9s7 pppd[15514]: pppd 2.4.3 started by peter, uid 0
Jun 21 17:34:30 linux-h9s7 kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000030
Jun 21 17:34:30 linux-h9s7 kernel:  printing eip:
Jun 21 17:34:30 linux-h9s7 kernel: f92aa8bb
Jun 21 17:34:30 linux-h9s7 kernel: *pde = 00000000
Jun 21 17:34:30 linux-h9s7 kernel: Oops: 0002 [#1]
Jun 21 17:34:30 linux-h9s7 kernel: SMP
Jun 21 17:34:30 linux-h9s7 kernel: last sysfs file:
/devices/pci0000:00/0000:00:1d.2/usb3/3-1/3-1:1.1/power/state
Jun 21 17:34:30 linux-h9s7 kernel: Modules linked in: ppp_async ppp_generic slhc
crc_ccitt joydev st sr_mod nls_iso8859_1 nls_cp437 vfat fat sg sd_mod
usb_storage scsi_mod ipaq usbserial ipv6 snd_pcm_oss snd_mixer_oss snd_seq
snd_seq_device af_packet edd button battery ac apparmor aamatch_pcre loop dm_mod
e100 mii i2c_i801 snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm snd_timer snd
soundcore snd_page_alloc shpchp ehci_hcd pci_hotplug i8xx_tco i2c_core uhci_hcd
usbcore ide_cd cdrom parport_pc lp parport ext3 jbd fan thermal processor piix
ide_disk ide_core
Jun 21 17:34:30 linux-h9s7 kernel: CPU:    0
Jun 21 17:34:30 linux-h9s7 kernel: EIP:    0060:[<f92aa8bb>]    Not tainted VLI
Jun 21 17:34:30 linux-h9s7 kernel: EFLAGS: 00010286   (2.6.16.13-4-smp #1)
Jun 21 17:34:30 linux-h9s7 kernel: EIP is at ipaq_open+0x185/0x2aa [ipaq]
Jun 21 17:34:30 linux-h9s7 kernel: eax: 00000000   ebx: f30dc4e0   ecx: 00000000
  edx: e2173000
Jun 21 17:34:30 linux-h9s7 kernel: esi: e0de42b4   edi: 00000100   ebp: c1aa1000
  esp: c8de5e94
Jun 21 17:34:30 linux-h9s7 kernel: ds: 007b   es: 007b   ss: 0068
Jun 21 17:34:30 linux-h9s7 kernel: Process pppd (pid: 15514, threadinfo=c8de4000
task=c1a3d6b0)
Jun 21 17:34:30 linux-h9s7 kernel: Stack: <0>e0de42a0 d6e0a540 00000000 c1aa1000
d6e0a540 f68d9000 ffffffed f92c6cb8
Jun 21 17:34:30 linux-h9s7 kernel:        c1af3ec0 c1aa100c 00000802 c1af3ec0
00000000 0bc00000 c0200a21 00000000
Jun 21 17:34:30 linux-h9s7 kernel:        0802d800 00000000 f68d9000 00000000
e4591c04 00000000 f6dcda84 c01634ce
Jun 21 17:34:30 linux-h9s7 kernel: Call Trace:
Jun 21 17:34:30 linux-h9s7 kernel:  [<f92c6cb8>] serial_open+0xee/0x165 [usbserial]
Jun 21 17:34:30 linux-h9s7 kernel:  [<c0200a21>] tty_open+0x196/0x311
Jun 21 17:34:30 linux-h9s7 kernel:  [<c01634ce>] chrdev_open+0x124/0x161
Jun 21 17:34:30 linux-h9s7 kernel:  [<c01633aa>] chrdev_open+0x0/0x161
Jun 21 17:34:30 linux-h9s7 kernel:  [<c015a457>] __dentry_open+0xc7/0x1ab
Jun 21 17:34:30 linux-h9s7 kernel:  [<c015a59f>] nameidata_to_filp+0x19/0x28
Jun 21 17:34:30 linux-h9s7 kernel:  [<c015a5da>] do_filp_open+0x2c/0x32
Jun 21 17:34:30 linux-h9s7 kernel:  [<c015a61e>] do_sys_open+0x3e/0xb0
Jun 21 17:34:30 linux-h9s7 kernel:  [<c015a6bd>] sys_open+0x16/0x18
Jun 21 17:34:30 linux-h9s7 kernel:  [<c0103c89>] syscall_call+0x7/0xb
Jun 21 17:34:30 linux-h9s7 kernel: Code: 45 40 0f 84 12 01 00 00 a1 98 a3 2f c0
ba d0 00 00 00 e8 2b df ea c6 8b 55 40 85 c0 89 45 50 75 07 89 d0 e9 ed 00 00 00
8b 45 48 <89> 50 30 8b 55 58 8b 45 50 89 42 30 8b 45 48 c7 40 38 00 10 00

Can you please try the 2.6.17 kernel release instead of 2.6.16?

Sorry, should have tried 2.6.17 in the first place.
This is the reaction of Kernel 2.6.17.1 (plain vanilla):

Jun 22 10:23:25 linux-h9s7 kernel: PPP generic driver version 2.4.2
Jun 22 10:23:25 linux-h9s7 synce-serial-start: Executing /usr/sbin/pppd call
synce-device
Jun 22 10:23:25 linux-h9s7 pppd[4266]: pppd 2.4.3 started by peter, uid 0
Jun 22 10:23:25 linux-h9s7 kernel: BUG: unable to handle kernel NULL pointer
dereference at virtual address 00000030
Jun 22 10:23:25 linux-h9s7 kernel:  printing eip:
Jun 22 10:23:25 linux-h9s7 kernel: f8fbc8bb
Jun 22 10:23:25 linux-h9s7 kernel: *pde = 00000000
Jun 22 10:23:25 linux-h9s7 kernel: Oops: 0002 [#2]
Jun 22 10:23:25 linux-h9s7 kernel: SMP
Jun 22 10:23:25 linux-h9s7 kernel: Modules linked in: ppp_async ppp_generic slhc
crc_ccitt ipaq usbserial ipv6 snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device
af_packet edd button battery ac sg sd_mod loop usb_storage scsi_mod dm_mod
uhci_hcd ehci_hcd e100 usbcore snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm
snd_timer snd soundcore snd_page_alloc shpchp i2c_i801 pci_hotplug i8xx_tco
ide_cd cdrom mii i2c_core parport_pc lp parport ext3 jbd fan thermal processor
piix ide_disk ide_core
Jun 22 10:23:25 linux-h9s7 kernel: CPU:    0
Jun 22 10:23:25 linux-h9s7 kernel: EIP:    0060:[<f8fbc8bb>]    Not tainted VLI
Jun 22 10:23:25 linux-h9s7 kernel: EFLAGS: 00010286   (2.6.17.1-smp #1)
Jun 22 10:23:25 linux-h9s7 kernel: EIP is at ipaq_open+0x185/0x2aa [ipaq]
Jun 22 10:23:25 linux-h9s7 kernel: eax: 00000000   ebx: ead1d660   ecx: dfffd440
  edx: ebf02000
Jun 22 10:23:25 linux-h9s7 kernel: esi: c192f694   edi: 00000100   ebp: f7c50600
  esp: edb41ea0
Jun 22 10:23:25 linux-h9s7 kernel: ds: 007b   es: 007b   ss: 0068
Jun 22 10:23:25 linux-h9s7 kernel: Process pppd (pid: 4266, threadinfo=edb40000
task=dffbd030)
Jun 22 10:23:25 linux-h9s7 kernel: Stack: c192f680 ed6a55c0 f7c5060c f7c50600
ed6a55c0 f795c800 f7c5060c f8f41ca9
Jun 22 10:23:25 linux-h9s7 kernel:        f3b57800 ffffffed 00000802 f3b57800
00000000 0bc00001 c01fb5d0 00000000
Jun 22 10:23:25 linux-h9s7 kernel:        0802c800 00000001 f795c800 00000000
c1af7a04 00000000 f7ff25d4 c0162901
Jun 22 10:23:25 linux-h9s7 kernel: Call Trace:
Jun 22 10:23:25 linux-h9s7 kernel:  <f8f41ca9> serial_open+0xdf/0x154
[usbserial]  <c01fb5d0> tty_open+0x176/0x2eb
Jun 22 10:23:25 linux-h9s7 kernel:  <c0162901> chrdev_open+0x124/0x161 
<c01627dd> chrdev_open+0x0/0x161
Jun 22 10:23:25 linux-h9s7 kernel:  <c0159865> __dentry_open+0xc7/0x1ab 
<c01599ad> nameidata_to_filp+0x19/0x28
Jun 22 10:23:25 linux-h9s7 kernel:  <c01599e8> do_filp_open+0x2c/0x32 
<c0159a2c> do_sys_open+0x3e/0xb0
Jun 22 10:23:25 linux-h9s7 kernel:  <c0159acb> sys_open+0x16/0x18  <c0103c27>
syscall_call+0x7/0xb
Jun 22 10:23:25 linux-h9s7 kernel: Code: 45 3c 0f 84 12 01 00 00 a1 58 08 2e c0
ba d0 00 00 00 e8 4f b3 19 c7 8b 55 3c 85 c0 89 45 4c 75 07 89 d0 e9 ed 00 00 00
8b 45 44 <89> 50 30 8b 55 54 8b 45 4c 89 42 30 8b 45 44 c7 40 38 00 10 00
Jun 22 10:23:25 linux-h9s7 kernel: EIP: [<f8fbc8bb>] ipaq_open+0x185/0x2aa
[ipaq] SS:ESP 0068:edb41ea0

I really don't know what to suggest here.

If someone can point me to a fix for this issue, I'll gladly apply it.

Are you still having this same problem on the latest 2.6.18-rc5 release?

Yes, there're some fixes for ip

Peter,
Any updates on this problem? Have you tried later kernels? It's been a lot of fixes to usb after 2.6.18.

--Natalie

Please reopen this bug if it's still present with kernel 2.6.22.