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From: Jamie Lokier <jamie-yetKDKU6eevNLxjTenLetw@public.gmane.org>
To: Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
Cc: Daniel Ng <daniel.ng1234-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>,
	linux-embedded-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: 2.6.27- Sending uevent from a driver
Date: Fri, 3 Jul 2009 16:36:11 +0100	[thread overview]
Message-ID: <20090703153611.GA23678@shareable.org> (raw)
In-Reply-To: <20090702111107.08332a4b-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>

Alan Cox wrote:
> > Or, maybe the userspace program can receive some sort of interrupt
> > from the TTY device when it is ready for I/O.
> > 
> > Perhaps there is another way to avoid continued polling?
> 
> TIOCMIWAIT ioctl for modem signals, and just using poll/select() on the
> tty for I/O.

Ah yes, the undocumented ioctl...  I knew there was one, just couldn't
find it in the man page just now.

-- Jamie
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      parent reply	other threads:[~2009-07-03 15:36 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-30  8:30 2.6.27- Sending uevent from a driver Daniel Ng
2009-06-30 14:14 ` Alan Stern
2009-06-30 15:41 ` Greg KH
     [not found]   ` <20090630154110.GD16038-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2009-07-02  4:39     ` Daniel Ng
     [not found]       ` <547eba1b0907012139l6b406191p1fc1bdbe3ebc0737-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-07-02 10:11         ` Alan Cox
     [not found]           ` <20090702111107.08332a4b-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
2009-07-03 15:36             ` Jamie Lokier [this message]

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