Re: [TTY] 2 points seems strange to me.

[Franck Bui-Huu]

> > Second point, a lot of serial drivers call in their interrupt handler
> > "tty_flip_buffer_push" function. This function must no be called
> > in interrupt context. Why is it done anyway ?
>
>
> Calling tty_flip_buffer_push() is fine from interrupt
> as long as tty->low_latency is not set. It just queues
> work for later.
I was looking at driver for 8250 in 8250.c file and at the end
of "receive_chars" interrupt handler, it calls "tty_flip_buffer_push"
even if "tty->low_latency" is set since no such test is done before
the call...
I was also wondering why not always calling "schedule_delayed_work"
whatever the state of "tty->latency"?

         Franck

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