From: Uncle George <netbeans@gatworks.com>
To: unlisted-recipients:; (no To-header on input)
Cc: linux-kernel@vger.kernel.org
Subject: Re: SELECT() returns 1 But FIONREAD says (Input/output error)
Date: Fri, 01 Jun 2007 20:02:18 -0400 [thread overview]
Message-ID: <4660B38A.3040908@gatworks.com> (raw)
In-Reply-To: <465F891B.1080103@shaw.ca>
Robert Hancock wrote:
> It's because you haven't done anything to handle the error which is
> still persisting. Likely the only thing sane you can do in this case is
> close the fd and try to reopen it later.
>
This seems to be true, but not for what you might think.
It appears that if u plug the USB/serial device back into the usb-hub,
the code creates a /dev/ttyUSB1 ( if you have not yet closed the
disconnected /dev/ttyUSB0. ) When you do close /dev/ttyUSB0, then the
device is erased from the /dev directory.
Now /dev/ttyUSB1 is the device. And /dev/ttyUSB0 disappeared. This does
not seem proper. As now the program has no idea or capability to re-open
the GPS device.
I have been informed that this was an approved kernel feature. Is this
suppose to happen? Or was it an unintended consequence?
next prev parent reply other threads:[~2007-06-02 0:02 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.qaWJQn9l1jDV+N9wFv9WqATf44U@ifi.uio.no>
[not found] ` <fa.pq45zUHWQMSHoRGL/M4uTPfFWHg@ifi.uio.no>
2007-06-01 2:48 ` SELECT() returns 1 But FIONREAD says (Input/output error) Robert Hancock
2007-06-02 0:02 ` Uncle George [this message]
[not found] <8qXzx-jY-31@gated-at.bofh.it>
2007-06-01 12:19 ` Bodo Eggert
2007-05-31 18:17 Uncle George
2007-06-01 1:01 ` David Schwartz
2007-06-01 1:53 ` Uncle George
2007-06-01 16:43 ` David Schwartz
2007-06-01 17:07 ` Uncle George
2007-06-01 17:33 ` David Schwartz
2007-06-01 20:04 ` Uncle George
2007-06-01 22:03 ` David Schwartz
2007-06-01 12:01 ` Uncle George
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