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List:       linux-i2c
Subject:    Re: [i2c] [PATCH] i2c-pca-algo: Fix errorcode
From:       Wolfram Sang <w.sang () pengutronix ! de>
Date:       2008-05-20 19:42:07
Message-ID: 20080520194206.GA11088 () pengutronix ! de
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Hi Jean,

On Tue, May 20, 2008 at 08:17:55PM +0200, Jean Delvare wrote:

> EBUSY is a fatal error, while a you should be able to retry the
> transaction later when the bus is free. So I think that EAGAIN would be
> more appropriate.
Okay, fine with me. (Does somebody know of a guide with references for
using errorcodes? EBUSY or EAGAIN? ENODEV or ENXIO? Preferred error
value if ioremap fails? It seems a bit messy. The patch that was
recently posted, defining possible situations for errorcodes within I2C
is really great. I wished I would have something like this for the
general kernel-routines.)

   Wolfram

--=20
  Dipl.-Ing. Wolfram Sang | http://www.pengutronix.de
 Pengutronix - Linux Solutions for Science and Industry

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