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: Lorenzo Pieralisi <[email protected]> CC: Hanjun Guo <[email protected]> CC: Sudeep Holla <[email protected]> Signed-off-by: Robin Murphy <[email protected]> --- drivers/acpi/arm64/iort.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 4a66896e2aa3..bc51cff5505e 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1014,6 +1014,7 @@ void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *dma_size) * Limit coherent and dma mask based on size * retrieved from firmware. */ + 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
