Dan Malek wrote: > > >> On a side note, do I really need to pass GFP_DMA .... > > The GFP_DMA is architecture dependent. Are you writing > a driver to be used across multiple architectures?
It's conceivable that the driver could work on PowerPC and ARM. > If it's > necessary, I'd document why you are using it (an ISA device > on x86 for example) and then let other architectures > determine if it's necessary for them. I guess I'm not clear. I was wondering why an API called "dma_alloc_coherent" (that has the word "dma" in it) needs to be told to allocate DMA-safe memory. When would it make sense to call dma_alloc_cohernet without GFP_DMA? If you don't want DMA-able memory, then you shouldn't be calling dma_alloc_anything. -- Timur Tabi Linux kernel developer _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
