[prev in list] [next in list] [prev in thread] [next in thread]
List: linux-i2c
Subject: Re: GPIO: Fix probe() error return in gpio driver probes
From: Ben Dooks <ben-linux () fluff ! org>
Date: 2008-12-18 22:29:36
Message-ID: 20081218222936.GI8032 () fluff ! org ! uk
[Download RAW message or body]
On Thu, Dec 18, 2008 at 10:16:27AM -0800, David Brownell wrote:
> On Monday 15 December 2008, Jean Delvare wrote:
> >
> > > > > I was thinking that -EINVAL is almost the least informative
> > > > > diagnostic code possible, since so many places return it
> > > > > that it's usually hard to find out *which* invalid parameter
> > > > > triggered ...
> > > > >
> > > > > Is there a less-overloaded code you could return?
> > > >
> > > > -EINVAL sounds right to me, all that's really missing is dev_dbg()
> > > > messages in the drivers to log what the exact problem was.
>
> Fair enough, though it just papers over how ambiguous -EINVAL is.
Unforunately there's not a lot of choice in errno.h for other options.
> > > It might be more acceptable to be dev_err(), that way it will get
> > > printed no matter what debug options have been selected. If so, a
> > > seperate patch is probably in order to make the change.
> >
> > As far as I can see, such errors would be caused by development-time
> > mistakes, so dev_dbg() seems appropriate. dev_err() would make the
> > binaries larger for all end-users.
>
> Right, dev_dbg() is the way to go. I'd ack a version of this patch
> which pairs these -EINVAL changes with dev_dbg() messages to make
> these problems less painful to track down. dev_err() is much abused.
Ok, I'll try and sort that out for you as soon as possible.
--
Ben (ben@fluff.org, http://www.fluff.org/)
'a smiley only costs 4 bytes'
--
To unsubscribe from this list: send the line "unsubscribe linux-i2c" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic