On Thu, 19 Aug 2010 18:18:35 +0300 Marin Mitov <mitov@xxxxxxxxxxx> wrote: > struct device contains a member: struct dma_coherent_mem *dma_mem; > to hold information for a piece of memory declared dma-coherent. > Alternatively the same member could also be used to hold preallocated > dma-coherent memory for latter per-device use. I think that drivers/base/dma-coherent.c is for architectures to implement dma_alloc_coherent(). So using it for drivers doesn't look correct. > This tric is already used in drivers/staging/dt3155v4l.c > dt3155_alloc_coherent()/dt3155_free_coherent() > > Here proposed for general use by popular demand from video4linux folks. > Helps for videobuf-dma-contig framework. What you guys exactly want to do? If you just want to pre-allocate coherent memory for latter usage, why dma_pool API (mm/dmapool.c) doesn't work? -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
