On Wed, Sep 10, 2014 at 05:28:19PM -0400, Peter Hurley wrote: > This patch changes user-space behavior (for the better) but I'm not sure > that it's consequence-free. Also, it might not be enough to unwedge the > terminal if the driver got its own flow control state mangled. > > Thoughts? > > --- >% --- > Subject: [RFC] tty: Always allow tcflow(TCOON) to unwedge terminal > > If terminal flow has been stopped, the terminal can be unwedged > by: > tcflow(fd, TCOOFF); > tcflow(fd, TCOON); > This works because tcflow(TCOOFF) ensures that ->flow_stopped is set, > which allows tcflow(TCOON) to override the terminal flow state in > __start_tty(). > > Instead, allow unwedging with only: > tcflow(fd, TCOON); > by disregarding the existing ->flow_stopped state. I don't see the benifit here, what are you trying to solve? Sending one extra tcflow command? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
