[PATCH 4/7] ARM: EXYNOS4: Support early wakeup while entering sleep mode

[Russell King - ARM Linux]

On Mon, Jul 04, 2011 at 06:42:08PM +0900, Kukjin Kim wrote:
> Russell King - ARM Linux wrote:
> > 
> > On Fri, Jul 01, 2011 at 10:03:48AM +0900, Kukjin Kim wrote:
> > > Russell thanks.
> > >
> > > How do you think to add following for handling failure of cpu_suspend?
> > >
> > > +	mov	r0, #-1
> > 
> > No.  -1 is not an error code, and I refuse to create functions which
> > use an explicit -1 as a return code to indicate failure.
> > 
> I used wrong words, 'handling failure' :(
> 
> Actually, it means handling other case, like early wakeup but we will
> address comments from you :)

Bear in mind that others may wish to return negative errno codes
through this, so if you want to indicate 'no need to resume and
restore state' then I guess using a small positive number would be
acceptable to distinguish it from a real error.