[PATCH 1/2] phy: marvell: comphy: Convert internal SMCC firmware return codes to errno

[Pali Rohár]

On Wednesday 02 September 2020 19:00:10 Andrew Lunn wrote:
> > > > +	switch (ret) {
> > > > +	case SMCCC_RET_SUCCESS:
> > > > +		return 0;
> > > > +	case SMCCC_RET_NOT_SUPPORTED:
> > > > +		return -EOPNOTSUPP;
> > > > +	default:
> > > > +		return -EINVAL;
> > > > +	}
> > > >  }
> > > 
> > > Hi Pali
> > > 
> > > Maybe this should be a global helper translating SMCCC_RET_* into a
> > > standard errno value?
> > > 
> > > 	 Andrew
> > 
> > Hello Andrew!
> > 
> > Well, I'm not sure if some standard global helper is the correct way for
> > marvell comphy handler. It returns 0 for success and -1 on error when
> > handler is not supported.
> 
> No, i was meaning just 
> 
> switch (ret) {
> case SMCCC_RET_SUCCESS:
> 	return 0;
> case SMCCC_RET_NOT_SUPPORTED:
> 	return -EOPNOTSUPP;
> default:
> 	return -EINVAL;
> }

But this is not a complete generic helper. There are more generic SMCC
return codes and generic helper should define and translate all of them.