I got the same problem when working with HuaWei E180 USB dongle. With some debugging, it seems that it stuck in kernel code "tty_set_ldisc", i.e. when pushing PPP line discipline.
No root cause identified yet. But I workaround this by using ttyUSB1 for AT and ttyUSB0 for PPP. In most case, modem will expose different ports for AT and data. Check your modem configuration. On Jul 4, 3:58 pm, Ash <ashwathga...@gmail.com> wrote: > Hi, > My pppd stuck in ioctl(tty_fd, TIOCSETD, &ppp_disc) call in > tty_establish_ppp function. > > i am using same serial interface(/dev/ttymxc2) forgsmandgprs. > > if i disablegsmand run only pppd it will not hang in ioctl(tty_fd, > TIOCSETD, &ppp_disc) call. > > if i run bothgsmandgprs(gprswill start pppd using same serial > inteface) pppd will hang in ioctl(tty_fd, TIOCSETD, &ppp_disc) call. > > whether we can use same serial interface forgsmandgprsor > different serial interface(/dev/ttymxc2 and /dev/ttymxc3)..? > > Ash --~--~---------~--~----~------------~-------~--~----~ unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
