When an explicit DMA limit is described by firmware, we need to remember it regardless of how drivers might subsequently update their devices' masks. The new bus_dma_mask field does that.
CC: Rob Herring <[email protected]> CC: Frank Rowand <[email protected]> Signed-off-by: Robin Murphy <[email protected]> --- drivers/of/device.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/of/device.c b/drivers/of/device.c index 33d85511d790..0d39633e8545 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -149,6 +149,7 @@ int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma) * set by the driver. */ mask = DMA_BIT_MASK(ilog2(dma_addr + size - 1) + 1); + dev->bus_dma_mask = mask; dev->coherent_dma_mask &= mask; *dev->dma_mask &= mask; -- 2.17.1.dirty _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
