Re: [PATCH 2/2] pch_uart: Delete modem status interrupt enable code

[Tomoya MORINAGA]

Hi Alan,

(2011/11/02 20:00), Alan Cox wrote:
> > Called ".get_mctrl" function, other software can know incoming carrier
> > detection.
> > Or you mean a uart driver must detect incoming carrier with interrupt ?
>
> If a user opens a tty port which has no carrier signal then the open is
> supposed to block until the carrier is raised unless either clocal
> termios or O_NDELAY open flags are set.
>
> That usually means you need to take the carrier raise interrupt in order
> to wake out of open in this case.

I understand.
We need to add modem status interrupt processing.

Thanks,
--
tomoya
ROHM Co., Ltd.
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