tree 9c3b6b265a9fb5a68ab3a130d4d0a944a0544d3f
parent d2510459a8b5f4ae0ee3740dd36ca1c4abd290b6
author Harald Welte <laforge@gnumonks.org> 1482598776 +0100
committer Harald Welte <laforge@gnumonks.org> 1482598776 +0100

serial.c: file descriptor '0' is a valid value

if stdin/stdout/stderr are all closed by our environment, it may very
well be that opening a serial port returns fd == 0.

Change-Id: Ifd9670260883a35da0629369e0d49e467d5b4d72