Re: [PATCH 5/6] driver core: lift dma_default_coherent into common code

[Christoph Hellwig]

On Mon, Feb 08, 2021 at 04:57:33PM +0100, Maciej W. Rozycki wrote:
> > diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c
> > index e98cc977a735b2..f8c9663e7faa10 100644
> > --- a/arch/mips/mti-malta/malta-setup.c
> > +++ b/arch/mips/mti-malta/malta-setup.c
> > @@ -143,7 +143,7 @@ static void __init plat_setup_iocoherency(void)
> >  			pr_crit("IOCU OPERATION DISABLED BY SWITCH - DEFAULTING TO SW IO COHERENCY\n");
> >  	}
> >  
> > -	if (supported)
> > +	if (supported) {
> >  		if (dma_force_noncoherent) {
> >  			pr_info("Hardware DMA cache coherency disabled\n");
> >  			return;
> 
>  I think this has to go with 1/6; otherwise compilation breaks between 
> then and now AFAICT.

Indeed.

>  Do you need to have this verified anyhow?  I only have a non-coherent 5Kc 
> Malta though.

If you get a chance to test this logic, that would be great.