2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 3ecec1445adf..4aced6689734 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -493,6 +493,7 @@ int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps)
         caps->dst_addr_widths = device->dst_addr_widths;
         caps->directions = device->directions;
         caps->residue_granularity = device->residue_granularity;
+        caps->descriptor_reuse = device->descriptor_reuse;
 
         /*
          * Some devices implement only pause (e.g. to get residuum) but no
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index c47c68e535e8..6f94b5cbd97c 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -659,6 +659,7 @@ enum dmaengine_alignment {
  *      struct with auxiliary transfer status information, otherwise the call
  *      will just return a simple status code
  * @device_issue_pending: push pending transactions to hardware
+ * @descriptor_reuse: a submitted transfer can be resubmitted after completion
  */
 struct dma_device {
 
@@ -681,6 +682,7 @@ struct dma_device {
         u32 src_addr_widths;
         u32 dst_addr_widths;
         u32 directions;
+        bool descriptor_reuse;
         enum dma_residue_granularity residue_granularity;
 
         int (*device_alloc_chan_resources)(struct dma_chan *chan);