This patch extends uio_dmem_genirq driver to use recently added memtypes as follows: 1. Use UIO_MEM_DEVICE memtype for MEM resources 2. Use UIO_MEM_PHYS_CACHE memtype for dynamic regions when UIO DT node is marked as DMA coherent. Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxxxx> --- drivers/uio/uio_dmem_genirq.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c index 0a0cc19..4bd6f31 100644 --- a/drivers/uio/uio_dmem_genirq.c +++ b/drivers/uio/uio_dmem_genirq.c @@ -279,7 +279,7 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev) break; } - uiomem->memtype = UIO_MEM_PHYS; + uiomem->memtype = UIO_MEM_DEVICE; uiomem->addr = r->start; uiomem->size = resource_size(r); ++uiomem; @@ -295,7 +295,12 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev) " dynamic and fixed memory regions.\n"); break; } - uiomem->memtype = UIO_MEM_PHYS; + + if (pdev->dev.of_node && + of_dma_is_coherent(pdev->dev.of_node)) + uiomem->memtype = UIO_MEM_PHYS_CACHE; + else + uiomem->memtype = UIO_MEM_PHYS; uiomem->addr = DMEM_MAP_ERROR; uiomem->size = pdata->dynamic_region_sizes[i]; ++uiomem; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
