On Thu 09 Jun 2011 at 00:13:30 Russell King - ARM Linux wrote: > > I stand by my answer to your patches quoted above from a technical > point of view; we should not be mapping SDRAM using device mappings. > > That ioremap() inside dma_declare_coherent_memory() needs to die,
Then how about your alternative, ARM specific solution, "Avoid aliasing mappings in DMA coherent allocator"? There was a series of initially two, then three patches, of which the two others (459c1517f987 "ARM: DMA: Replace page_to_dma()/dma_to_page() with pfn_to_dma()/dma_to_pfn()" and 9eedd96301ca "ARM: DMA: top-down allocation in DMA coherent region") are already in the mainline tree. I'm still porting a copy of that third one from kernel version to version to have my device working 100% reliably, in hope you finally push it into the mainline. No plans against it? Or is there something about it I could help with? Thanks, Janusz -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
