Re: [PATCH 05/18] staging: gasket: sysfs mapping creation fixups

[Greg Kroah-Hartman]

On Mon, Jul 16, 2018 at 02:14:27PM -0700, Todd Poynor wrote:
> On Fri, Jul 13, 2018 at 11:32 PM, Greg Kroah-Hartman
> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> > On Fri, Jul 13, 2018 at 10:58:03PM -0700, Todd Poynor wrote:
> >> From: Todd Poynor <toddpoynor@xxxxxxxxxx>
> >>
> >> Return EBUSY for attempt to create a mapping already in use.
> >
> > Why?
> 
> The existing code returns EINVAL which often means something bogus was
> requested, whereas EBUSY is sometimes used for requesting something
> already in use.  If that's not an error typically returned in this
> situation I'm happy to drop it.

My "why" was rhetorical, please spell this out in the changelog text :)

thanks,

greg k-h