My modem use driver option, and it create five interfaces, ttyUSB0,ttyUSB1,ttyUSB2,ttyUSB3,ttyUSB4. I use ttyUSB3 as AT port, my program open ttyUSB3, but i disconnect my modem, and reconnect it again, it will create five interfaces as ttyUSB0,ttyUSB1,ttyUSB2,ttyUSB4,ttyUSB5. Now AT port change to ttyUSB4.
On Thu, Aug 07, 2014 at 06:55:54AM +0000, bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=81801 > > Bug ID: 81801 > Summary: driver option create ttyUSB Please send this to the linux-usb@vger.kernel.org mailing list.