On 17/6/2022 12:11 pm, Chris Ruehl wrote:
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
Enabled the debugfs and checked /sys/kernel/debug/usb/devices for the B5L
T: Bus=02 Lev=03 Prnt=04 Port=01 Cnt=01 Dev#= 17 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=02(comm.) Sub=02 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0590 ProdID=00ca Rev= 2.00
S: Manufacturer=OMRON Corporation
S: Product=OMRON B5L-001011
S: SerialNumber=010000319A1
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 4mA
I:* If#= 0 Alt= 0 #EPs= 4 Cls=02(comm.) Sub=02 Prot=00 Driver=(none)
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=03(Int.) MxPS= 64 Ivl=4096ms
E: Ad=84(I) Atr=03(Int.) MxPS= 64 Ivl=4096ms
Driver is not assigned.
-Chris
