serial: usb: cdc-acm: OMRON B5L ToF, device probe failed

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Hi there,

yet an other cdc-acm which not probed and no /dev/ttyACM0 comes up.

[  539.655588] usb 2-1.4.3: USB disconnect, device number 9
[  568.792182] usb 2-1.4.3: new high-speed USB device number 10 using ehci-pci
[  568.890554] usb 2-1.4.3: New USB device found, idVendor=0590, idProduct=00ca, bcdDevice= 2.00
[  568.890562] usb 2-1.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  568.890566] usb 2-1.4.3: Product: OMRON B5L-001011
[  568.890568] usb 2-1.4.3: Manufacturer: OMRON Corporation
[  568.890571] usb 2-1.4.3: SerialNumber: 010000366A1
[  568.945679] cdc_acm 2-1.4.3:1.0: Zero length descriptor references
[  568.945690] cdc_acm: probe of 2-1.4.3:1.0 failed with error -22
[  568.946477] usbcore: registered new interface driver cdc_acm
[  568.946480] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters

so I set the quirk in the cdc-acm.c

 { USB_DEVICE(0x0590, 0x00ca), /* Omron b5l */
     .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
 },

and solved the error.

[  724.148131] usbcore: deregistering interface driver cdc_acm
[  725.766219] usb 2-1.4.3: USB disconnect, device number 10
[  757.467770] usb 2-1.4.3: new high-speed USB device number 11 using ehci-pci
[  757.566100] usb 2-1.4.3: New USB device found, idVendor=0590, idProduct=00ca, bcdDevice= 2.00
[  757.566109] usb 2-1.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  757.566113] usb 2-1.4.3: Product: OMRON B5L-001011
[  757.566115] usb 2-1.4.3: Manufacturer: OMRON Corporation
[  757.566117] usb 2-1.4.3: SerialNumber: 010000366A1
[  757.622501] usbcore: registered new interface driver cdc_acm
[  757.622506] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters


But the kernel does not create the /dev/ttyACM0.

Kernel is vanilla 5.15.47

lsusb -v get me this.

Bus 002 Device 014: ID 0590:00ca Omron Corp. OMRON B5L-001011
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            2 Communications
  bDeviceSubClass         2 Abstract (modem)
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0590 Omron Corp.
  idProduct          0x00ca
  bcdDevice            2.00
  iManufacturer           1 OMRON Corporation
  iProduct                2 OMRON B5L-001011
  iSerial                 3 010000366A1
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x002e
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower                4mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           4
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      0
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval              16
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval              16
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            2 Communications
  bDeviceSubClass         2 Abstract (modem)
  bDeviceProtocol         0
  bMaxPacketSize0        64
  bNumConfigurations      1
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0001
  Self Powered


Anything you have in mind?

Thanks
Chris





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