On Wed, 28 Jan 2009 18:30:47 +0000, Ralf Baechle <ralf@xxxxxxxxxxxxxx> wrote: > --- a/arch/mips/lib/memcpy.S > +++ b/arch/mips/lib/memcpy.S > @@ -21,7 +21,7 @@ > * end of memory on some systems. It's also a seriously bad idea on non > * dma-coherent systems. > */ > -#if !defined(CONFIG_DMA_COHERENT) || !defined(CONFIG_DMA_IP27) > +#ifdef CONFIG_DMA_NONCOHERENT > #undef CONFIG_CPU_HAS_PREFETCH > #endif > #ifdef CONFIG_MIPS_MALTA This makes IP27 (and all other coherent platforms) use prefetch. Is prefetch OK for all of them? I suppose memcpy_fromio() should not use PREFETCH, at least. --- Atsushi Nemoto
