Hi:
I have three progree: HIT, new-sim300 and pppd, also have a driver
cdc-acm.ko(it generates a device file /dev/ttyACM0).
I call open(/dev/ttyACM0) in HIT, and then call system("./pppd") and
system("./new-sim300") in HIT. I think, when I kill HIT, the
close(dev/ttyACM0) will be called automatically.But in fact, the
close(dev/ttyACM0) isn't called until the pppd, new-sim300 and HIT are all
killed.who can tell me why?
Thanks in advance!致 礼！ 2009-04-16 snoppy1314
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