On Tue, Feb 22, 2022 at 09:41:43PM +0800, Baoquan He wrote: > For newly added streaming mapping APIs, the internal core function > __dma_alloc_pages() should check dev->dma_mask, but not > ev->coherent_dma_mask which is for coherent mapping. No, this is wrong. dev->coherent_dma_mask is and should be used here. > > > Meanwhile, just filter out gfp flags if they are any of > __GFP_DMA, __GFP_DMA32 and __GFP_HIGHMEM, but not fail it. This change > makes it consistent with coherent mapping allocs. This is wrong as well. We want to eventually fail dma_alloc_coherent for these, too. It just needs more work.
