On Wednesday 31 October 2012 16:49:36 Ganesh Kumar wrote: > Hi all, > > *** Sorry if this is not the right forum to post this issue, as i > searched for any linux usb users mailing list, dint get one, the one > on sourceforge seems obsolete, so tried posting here. *** > > I'm working on Sierra wireless 3g usb dongle on Linux 2.6.38 on my > embedded board, I'm facing an issue w.r.t usb when I connect the 3g > dongle through a 7 port Dlink USB Hub. > > 1. below setup doesn't work > board <--> dlink hub <---> 3g usb dongle > I connect the 3g usb dongle to the Dlink USB Hub and i issue the AT > commands through the busybox microcom, after I get OK for the > connection, if I try to > run dhclinet on wwan0 or if I do a ifconfig wwan0 up i see the below > error message: > > SIOCSIFFLAGS: No space left on device -ENOSPC indicates that bandwidth was insufficient. > 2. below setup works just fine: > board <---> 3g usb dongle > if i connect the 3g usb dongle directly to the embedded board's usb > port & try the steps as per (1) > it works smoothly !! > > is it something to do with the linux usb stack? any clue will really > help in resolving the issue > Has anyone faced this issue before? > Thanks in advance for your time!. Do you have anything else on that hub that eats bandwidth? Regards Oliver -- 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
