On Mon, 2016-05-30 at 22:46 -0400, Dave Mielke wrote:
> Is this the right mailing list for ttyACM device issues, or should I be
> contactring the serial device people? Just in case this is the right place,
> here's the issue.
>
> I'm using Linux kernel 3.11.10-100.fc18.x86_64. I'm using termios, among
> other
> things, to turn ICANON off and to set both VTIME and VMIN to 0. This should
> do
> non-blocking reads that return 0 (something our code always successfully does
> with ttyS devices) but, with the ttyACM device, the read blocks. Is this
> expected behaviour for ttyACM devices?
That is a bug. It is with a very old kernel. Can you replicate it with
the current kernel? If so, please provide information about where it
hangs. Sysrq-T will do that.
Regards
Oliver
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