https://bugzilla.kernel.org/show_bug.cgi?id=218338 Bug ID: 218338 Summary: usb: cdc_acm: Support for Uniden BC125AT radio scanner Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: enhancement Priority: P3 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: felipe.aranda@xxxxxxxxx Regression: No Uniden BC125AT radio scanner has USB interface which fails to work with cdc_acm driver: `dmesg`: ~~~ usb 1-2: New USB device found, idVendor=1965, idProduct=0017, bcdDevice= 0.01 usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-2: Product: BC125AT usb 1-2: Manufacturer: Uniden America Corp. usb 1-2: SerialNumber: 0001 cdc_acm 1-2:1.0: Zero length descriptor references cdc_acm: probe of 1-2:1.0 failed with error -22 ~~~ `lsusb -v` of the device: ~~~ Bus 001 Device 012: ID 1965:0017 Uniden Corporation BC125AT Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 2 Communications bDeviceSubClass 0 [unknown] bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x1965 Uniden Corporation idProduct 0x0017 BC125AT bcdDevice 0.01 iManufacturer 1 Uniden America Corp. iProduct 2 BC125AT iSerial 3 0001 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x0030 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 2 Communications bInterfaceSubClass 2 Abstract (modem) bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x87 EP 7 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 10 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 10 CDC Data bInterfaceSubClass 0 [unknown] 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 Device Status: 0x0000 (Bus Powered) ~~~ The code to add in /drivers/usb/class/cdc-acm.c ~~~ { USB_DEVICE(0x1965, 0x0017), /* Uniden BC125AT */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, ~~~ Reference: https://lore.kernel.org/lkml/20180706054524.670321998@xxxxxxxxxxxxxxxxxxx/ Thanks in advance ! -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
