Похоже, некоторое прояснение с вылетом свежего драйвера от WCH. У устройства три конечных точки. И в момент открытия, модуль ядра (драйвер) ругается на несоответствие "шланга".
Вот описание устройства:
Bus 002 Device 012: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 32
idVendor 0x1a86 QinHeng Electronics
idProduct 0x7523 HL-340 USB-Serial adapter
bcdDevice 2.54
iManufacturer 1 Љ
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0027
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 96mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 2
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 1
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0000
(Bus Powered)
А вот ошибка:
[ 1840.714523] usb 2-1.4.2: BOGUS urb xfer, pipe 3 != type 1
[ 1840.714629] WARNING: CPU: 13 PID: 7182 at drivers/usb/core/urb.c:480 usb_submit_urb+0x518/0x5a0 [usbcore]
...
[ ...........] usb_ch341 2-1.4.3:1.0: ch341_submit_read_urb - usb_submit_urb failed: -22
Есть упоминания тут
https://patchwork.kernel.org/project/linux-media/patch/1420206991-3939-2-git-send-email-tvboxspy@gmail.com/
и тут
https://github.com/qca/open-ath9k-htc-firmware/wiki/usb-related-issues
Но не понятно, насколько релевантны.