async_tx: replace 'int_en' with operation preparation flags

Pass a full set of flags to drivers' per-operation 'prep' routines.
Currently the only flag passed is DMA_PREP_INTERRUPT.  The expectation is
that arch-specific async_tx_find_channel() implementations can exploit this
capability to find the best channel for an operation.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Reviewed-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/crypto/async_tx/async_memcpy.c b/crypto/async_tx/async_memcpy.c
index faca0bc52068..25dcf33bbc2d 100644
--- a/crypto/async_tx/async_memcpy.c
+++ b/crypto/async_tx/async_memcpy.c
@@ -52,6 +52,7 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
 
         if (device) {
                 dma_addr_t dma_dest, dma_src;
+                unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0;
 
                 dma_dest = dma_map_page(device->dev, dest, dest_offset, len,
                                         DMA_FROM_DEVICE);
@@ -60,7 +61,7 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
                                        DMA_TO_DEVICE);
 
                 tx = device->device_prep_dma_memcpy(chan, dma_dest, dma_src,
-                                                    len, cb_fn != NULL);
+                                                    len, dma_prep_flags);
         }
 
         if (tx) {