linux driver error code -71?

[teenylasers]

Hello,

I'm trying to use peak-linux-driver-8.4.0 on ubuntu 16.04. I did make, sudo make install, and sudo modprobe pcan, all without problem. However, receivetest and pcan-settings both gave me errors, as below:

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$ receivetest -f=/dev/pcanusbfd32
receivetest Version "Release_20150611_n"  (http://www.peak-system.com)
------- Copyright (C) 2004-2009 PEAK System-Technik GmbH ------
receivetest comes with ABSOLUTELY NO WARRANTY.     This is free
software  and you are welcome  to redistribute it under certain
conditions.   For   details   see    attached   COPYING   file.
receivetest: device node="/dev/pcanusbfd32"
             Only standard frames are accepted, init with 500 kbit/sec.
receivetest: can't open /dev/pcanusbfd32
receivetest: finished (71): 0 message(s) received

Code: Select all

$ pcan-settings -f=/dev/pcanusbfd32 -s
pcan-settings: /dev/pcanusbfd32: Protocol error

"dmesg | grep pcan" shows me the following:

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$ dmesg | grep pcan
[    5.904675] pcan: loading out-of-tree module taints kernel.
[    5.904756] pcan: module verification failed: signature and/or required key missing - tainting kernel
[    5.905248] pcan: Release_20170613_n 
[    5.905250] pcan: driver config [mod] [isa] [pci] [pec] [dng] [par] [usb] [pcc] 
[    5.907451] Modules linked in: pcan(OE+) snd_seq_midi snd_seq_midi_event pcmcia snd_rawmidi pcmcia_core i2c_algo_bit media snd_seq input_leds joydev snd_seq_device snd_timer serio_raw snd soundcore shpchp i2c_piix4 vmw_vmci nfit floppy(+) mac_hid binfmt_misc parport_pc ppdev lp parport autofs4 vmw_pvscsi vmxnet3 hid_generic usbhid hid psmouse vmwgfx ttm ahci e1000 libahci drm_kms_helper syscopyarea mptspi sysfillrect mptscsih sysimgblt fb_sys_fops mptbase drm scsi_transport_spi pata_acpi fjes
[    5.907495]  pcan_usbpro_request+0x62/0xb0 [pcan]
[    5.907499]  pcan_usbpro_driver_loaded+0x3f/0x60 [pcan]
[    5.907502]  pcan_usbfd_init+0x240/0xcf0 [pcan]
[    5.907505]  ? pcan_usb_plugin+0x4f5/0xa40 [pcan]
[    5.907508]  pcan_usb_plugin+0x52e/0xa40 [pcan]
[    5.907510]  ? pcan_usbfd_ctrl_init+0x80/0x80 [pcan]
[    5.907524]  ? pcan_soft_init_ex+0x320/0x320 [pcan]
[    5.907527]  pcan_usb_register_devices+0x5b/0x60 [pcan]
[    5.907530]  init_module+0x3c3/0x4b0 [pcan]
[    5.907532]  ? pcan_soft_init_ex+0x320/0x320 [pcan]
[    5.908724] pcan: PCAN-USB FD (01h PCB01h) fw v2.3.1
[    5.908911] pcan: unhandled read data stream turned off (err -71)
[    5.909745] pcan: PCAN-USB FD channel 1 device number=0
[    5.909746] pcan: usb device minor 32 found
[    5.909762] usbcore: registered new interface driver pcan
[    5.909770] pcan: major 244.
[   42.044837] pcan: PCAN-USB FD (01h PCB01h) fw v2.3.1
[   42.044951] pcan: unhandled read data stream turned off (err -71)
[   42.045647] pcan: PCAN-USB FD channel 1 device number=0
[   42.045745] pcan: usb device minor 32 found

What does "pcan: unhandled read data stream turned off (err -71)" mean and what do you suggest I could try next please? My linux kernel is 4.10.0-42-generic.

Thank you,

-j

[S.Grosjean]

Hello,

Please download and install our latest version of pcan (v8.5.1) from:

http://www.peak-system.com/fileadmin/me ... 5.1.tar.gz

This contains a fix that should help you.

Regards,

Stéphane

[teenylasers]

Hello Stéphane,

Thanks for the quick reply! I tried the latest version of the linux driver v8.5.1, but still have the same problem with error code -71 in dmesg.

Thanks,
-j

[S.Grosjean]

Hi,

Could you please give us the (new) dmesg output with v8.5.1 loaded?

Regards,