Re: [PATCH 1/5] drivercore: add new error value for deferred probe

From: Mark Brown
Date: Fri Oct 07 2011 - 06:00:26 EST

On Thu, Oct 06, 2011 at 11:43:49PM -0700, Greg KH wrote:
> On Fri, Oct 07, 2011 at 10:33:06AM +0500, G, Manjunath Kondaiah wrote:

> > +#define EPROBE_DEFER 517 /* restart probe again after some time */

> Can we really do this? Isn't this some user/kernel api here?

> What's wrong with just "overloading" on top of an existing error code?
> Surely one of the other 516 types could be used here, right?

There was some discussion of this in the previous patch round before the
code was changed - it does end up adding an externally visible error
code but it doesn't really make any difference, especially if we don't
propagate it externally. We've already got some other codes in a
similar style, though I can't remember the examples that were quoted
offhand. Adding the new code avoids confusion about exactly what the
intent of the driver is.
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