[3/3] powerpc/dma: Remove ZONE_DMA completely

[Michael Ellerman]

On Thu, 2015-02-26 at 17:38 +1100, Michael Ellerman wrote:
> On Fri, 2015-20-02 at 08:35:44 UTC, Benjamin Herrenschmidt wrote:
> > diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
> > index e24e0ae..6306d4e 100644
> > --- a/arch/powerpc/kernel/dma.c
> > +++ b/arch/powerpc/kernel/dma.c
> > @@ -63,16 +63,8 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size,
> >  		return NULL;
> >  	}
> >  
> > -	switch (zone) {
> > -	case ZONE_DMA:
> > -		flag |= GFP_DMA;
> > -		break;
> > -#ifdef CONFIG_ZONE_DMA32
> > -	case ZONE_DMA32:
> > +	if (zone == ZONE_DMA32)
> >  		flag |= GFP_DMA32;
> > -		break;
> > -#endif
> > -	};
> 
> You still need the ifdef, else eg. ppc6xx_defconfig:
> 
>   arch/powerpc/kernel/dma.c:66:14: error: 'ZONE_DMA32' undeclared (first use in this function)

And the rest :)

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