On 10/30/2014 03:07 AM, James Hogan wrote:
Hi Leonid, On 30/10/14 01:48, Leonid Yegoshin wrote:A default dma_alloc_coherent() fails to alloc a coherent memory on non-coherent systems in case of device->coherent_dma_mask covering the whole memory space. In case of non-coherent systems the coherent memory on MIPS is restricted by size of un-cachable segment and should be located in ZONE_DMA.Has this pretty much always been broken?
Yes, but it can be seen on MIPS32 EVA-based CPUs.
