On 16.01.2013 09:07, "Bernd Krumböck" wrote: > Hi Oliver! > >> When detaching the device from the CAN bus when sending/receiving CAN >> traffic >> i got these dmesg infos: >> >> [ 960.047130] usb_8dev 2-1.4:1.0 can2: Unknown status/error message (0) >> [ 976.544343] usb_8dev 2-1.4:1.0 can2: Unknown status/error message (0) >> > > Sorry, I can't do this sort of tests myself, because my second can device > is an expensive device, without developer/test mode. ;-) > > Gerd helped me with the can tests so far. (Thank you!) > > The messages you see mean "Normal condition" and shouldn't be displayed. > I'll fix them in the next version. > Here some more dmesg outputs: [ 308.198354] ems_pcmcia 0.0 can0: setting BTR0=0x00 BTR1=0x14 [ 315.208555] can: raw protocol (rev 20120528) [ 328.579107] usb 2-1.2: new full-speed USB device number 6 using ehci-pci [ 328.673540] usb 2-1.2: New USB device found, idVendor=0483, idProduct=1234 [ 328.673548] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 328.673553] usb 2-1.2: Product: USB2CAN converter [ 328.673557] usb 2-1.2: Manufacturer: edevices [ 328.673561] usb 2-1.2: SerialNumber: ED000212 [ 328.708127] usb_8dev 2-1.2:1.0 can2: firmware: 1.4, hardware: 255.255 [ 328.708209] usbcore: registered new interface driver usb_8dev [ 432.319047] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 439.522380] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 449.324727] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 574.442663] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 639.810998] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (39) <------------- CAN plug out / plug in ? I correctly get an error message frame which is displayed by candump can2,0~0,#FFFFFFFF -e Very nice. But i think there's no additional kernel message needed for that. [ 640.066949] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 643.669320] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 645.703327] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 659.652396] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 667.130633] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 682.904587] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (39) <------------- CAN plug out / plug in ? [ 683.115139] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 692.402507] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 754.103247] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 813.887344] usb 2-1.4: new full-speed USB device number 7 using ehci-pci <------------- USB plug in of PEAK adapter [ 813.985254] usb 2-1.4: New USB device found, idVendor=0c72, idProduct=000c [ 813.985258] usb 2-1.4: New USB device strings: Mfr=0, Product=3, SerialNumber=0 [ 813.985261] usb 2-1.4: Product: VER1:PEAK [ 813.985261] VER2:02.8.01 [ 813.985261] DAT :06.05.2004 [ 813.985261] TIME:09:35:37 [ 813.985261] ... [ 814.007847] peak_usb 2-1.4:1.0: PEAK-System PCAN-USB adapter hwrev 28 serial FFFFFFFF (1 channel) [ 814.008347] peak_usb 2-1.4:1.0 can3: attached to PCAN-USB channel 0 (device 37) [ 814.008400] usbcore: registered new interface driver peak_usb [ 836.196103] peak_usb 2-1.4:1.0 can3: setting BTR0=0x00 BTR1=0x14 [ 858.676730] usb_8dev 2-1.2:1.0 can2: couldn't find free context <------------- some 100% load tests [ 900.211646] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 1007.075674] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 1007.083660] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 1012.947678] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 1012.947684] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 3542.360315] usb_8dev 2-1.2:1.0 can2: couldn't find free context [ 3775.350727] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4019.272711] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4019.276510] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4034.787824] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4036.305381] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4043.180064] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (39) <------------- CAN plug out / plug in ? [ 4063.727159] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4063.730771] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4084.564526] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4084.566509] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4090.721503] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4090.730468] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 4135.224318] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) <------------- USB plug out [ 4135.224560] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 4135.224780] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 4135.225035] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 4135.225281] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 4135.225530] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) (..) [ 4135.449143] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 4135.449163] usb 2-1.2: USB disconnect, device number 6 [ 4135.449406] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 4135.450149] usb_8dev 2-1.2:1.0 can2: device disconnected [ 4135.450223] usb_8dev 2-1.2:1.0 can2: sending command message failed [ 4135.450226] usb_8dev 2-1.2:1.0 can2: couldn't stop device [ 4509.018148] usb 2-1.2: new full-speed USB device number 8 using ehci-pci <------------- USB plug in [ 4509.090027] usb 2-1.2: device descriptor read/64, error -32 [ 4509.265758] usb 2-1.2: device descriptor read/64, error -32 [ 4509.441420] usb 2-1.2: new full-speed USB device number 9 using ehci-pci [ 4509.535892] usb 2-1.2: New USB device found, idVendor=0483, idProduct=1234 [ 4509.535900] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 4509.535905] usb 2-1.2: Product: USB2CAN converter [ 4509.535909] usb 2-1.2: Manufacturer: edevices [ 4509.535913] usb 2-1.2: SerialNumber: ED000212 [ 4509.538736] usb_8dev 2-1.2:1.0 can2: firmware: 1.4, hardware: 255.255 [ 5043.232674] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) <------------- USB plug out [ 5043.232920] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.233168] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.233422] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.233672] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) (..) [ 5043.450557] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.450820] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.451067] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.451331] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.451562] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.451958] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.452068] usb 2-1.2: USB disconnect, device number 9 <------------- ha ha ha - correct but pretty late %-] [ 5043.452166] usb_8dev 2-1.2:1.0 can2: Rx URB aborted (-32) [ 5043.452368] usb_8dev 2-1.2:1.0 can2: device disconnected [ 5043.452388] usb_8dev 2-1.2:1.0 can2: sending command message failed [ 5043.452391] usb_8dev 2-1.2:1.0 can2: couldn't stop device [ 5045.693712] usb 2-1.2: new full-speed USB device number 10 using ehci-pci <------------- USB plug in - fast reconnect [ 5045.765625] usb 2-1.2: device descriptor read/64, error -32 [ 5045.941158] usb 2-1.2: device descriptor read/64, error -32 [ 5046.116888] usb 2-1.2: new full-speed USB device number 11 using ehci-pci [ 5046.211472] usb 2-1.2: New USB device found, idVendor=0483, idProduct=1234 [ 5046.211480] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 5046.211485] usb 2-1.2: Product: USB2CAN converter [ 5046.211489] usb 2-1.2: Manufacturer: edevices [ 5046.211493] usb 2-1.2: SerialNumber: ED000212 [ 5046.214561] usb_8dev 2-1.2:1.0 can2: firmware: 1.4, hardware: 255.255 [ 5079.471265] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 5094.652853] usb_8dev 2-1.2:1.0 can2: Unknown status/error message (0) [ 5188.280220] usb_8dev 2-1.2:1.0 can2: couldn't find free context <------------- some 100% load tests [ 5349.301144] usb_8dev 2-1.2:1.0 can2: couldn't find free context [ 5508.561402] usb_8dev 2-1.2:1.0 can2: couldn't find free context [ 5755.661129] usb_8dev 2-1.2:1.0 can2: couldn't find free context [ 5786.781054] usb_8dev 2-1.2:1.0 can2: couldn't find free context <------------- (..) [ 5822.180928] usb_8dev 2-1.2:1.0 can2: couldn't find free context [ 5827.850885] usb_8dev 2-1.2:1.0 can2: couldn't find free context [ 5891.685618] usb_8dev 2-1.2:1.0 can2: couldn't find free context [ 5930.230438] usb_8dev 2-1.2:1.0 can2: couldn't find free context <------------- some 100% load tests [ 5941.577933] peak_usb 2-1.4:1.0 can3: Rx urb aborted (-32) [ 5941.743693] usb 2-1.2: USB disconnect, device number 11 [ 5941.744096] usb_8dev 2-1.2:1.0 can2: device disconnected [ 5941.744121] usb_8dev 2-1.2:1.0 can2: sending command message failed [ 5941.744124] usb_8dev 2-1.2:1.0 can2: couldn't stop device Finally disconnecting the USB and the CAN bus - even under moderate CAN traffic conditions genereates this output. FYI: My laptop never crashed during these tests :-) I forgot to check the other USB CAN adapters for comparison. Will do tomorrow. Regards, Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
