On Tue, Nov 03, 2009 at 01:07:55PM +0800, dale young wrote: > HI > > we have a 3g dongle, and pppd call will use device /dev/ttyUSB0, > now the system will changed the device minor number when plug out > and plug in > > at first time, the device will attached to ttyUSB0.the log is > > usb 1-1: new full speed USB device using address 9 > usb-storage: probe of 1-1:1.0 failed with error -5 > option 1-1:1.0: Option 3G data card converter detected > usb 1-1: Option 3G data card converter now attached to ttyUSB0 > usb-storage: probe of 1-1:1.1 failed with error -5 > option 1-1:1.1: Option 3G data card converter detected > usb 1-1: Option 3G data card converter now attached to ttyUSB1 > > after plug out ,then plug in. the log will be > > option 1-1:1.0: Option 3G data card converter detected > usb 1-1: Option 3G data card converter now attached to ttyUSB1 > usb-storage: probe of 1-1:1.1 failed with error -5 > option 1-1:1.1: Option 3G data card converter detected > usb 1-1: Option 3G data card converter now attached to ttyUSB2 > > > since device number is changed, then pppd will never success. is there > way to keep the name unchanged? What kernel version are you using that you see this? And if you need a persistant name, use the one in /dev/serial/ instead of /dev/ttyUSBX directly. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
