1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 580e3eed4b78..af424acd393d 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -692,6 +692,7 @@ struct acpi_dev_node {
  * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all
  *              hardware supports 64-bit addresses for consistent allocations
  *              such descriptors.
+ * @dma_pfn_offset: offset of DMA memory range relatively of RAM
  * @dma_parms:  A low level driver may set these to teach IOMMU code about
  *              segment limitations.
  * @dma_pools:  Dma pools (if dma'ble device).
@@ -759,6 +760,7 @@ struct device {
                                              not all hardware supports
                                              64 bit addresses for consistent
                                              allocations such descriptors. */
+        unsigned long   dma_pfn_offset;
 
         struct device_dma_parameters *dma_parms;