Im Sorry , I just went to lunch
usbserial : USB serial support registered for “my serial port driver”
my serial port driver : serial port driver converter detected
usb 3-5 : my serial port driver converter now attached to ttyUSB0
my serial port driver : serial port driver converter detected
usb 3-5 : my serial port driver converter now attached to ttyUSB1
my serial port driver : serial port driver converter detected
usb 3-5 : my serial port driver converter now attached to ttyUSB2
Im sure my driver be loaded for wp7607 and qcserial , usb_wwan deleted before
It’s the same with qcserial if I comment out all the entry point functions and leave only the above 3 funtions, the AT command still works.
no idea, i have no experience in developing a new driver to replace qcserial which is already a working driver
Good luck!
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Thank for your help 