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>

3 files changed, 10 insertions, 6 deletions

diff --git a/crypto/async_tx/async_memcpy.c b/crypto/async_tx/async_memcpy.c
index faca0bc..25dcf33 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) {
diff --git a/crypto/async_tx/async_memset.c b/crypto/async_tx/async_memset.c
index 0c94851..8e98ab0 100644
--- a/crypto/async_tx/async_memset.c
+++ b/crypto/async_tx/async_memset.c
@@ -52,12 +52,13 @@ async_memset(struct page *dest, int val, unsigned int offset,
 
 	if (device) {
 		dma_addr_t dma_dest;
+		unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0;
 
 		dma_dest = dma_map_page(device->dev, dest, offset, len,
 					DMA_FROM_DEVICE);
 
 		tx = device->device_prep_dma_memset(chan, dma_dest, val, len,
-						    cb_fn != NULL);
+						    dma_prep_flags);
 	}
 
 	if (tx) {
diff --git a/crypto/async_tx/async_xor.c b/crypto/async_tx/async_xor.c
index 12cba1a..68d2fe4 100644
--- a/crypto/async_tx/async_xor.c
+++ b/crypto/async_tx/async_xor.c
@@ -45,6 +45,7 @@ do_async_xor(struct dma_device *device,
 	dma_addr_t *dma_src = (dma_addr_t *) src_list;
 	struct dma_async_tx_descriptor *tx;
 	int i;
+	unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0;
 
 	pr_debug("%s: len: %zu\n", __FUNCTION__, len);
 
@@ -60,7 +61,7 @@ do_async_xor(struct dma_device *device,
 	 * in case they can not provide a descriptor
 	 */
 	tx = device->device_prep_dma_xor(chan, dma_dest, dma_src, src_cnt, len,
-					 cb_fn != NULL);
+					 dma_prep_flags);
 	if (!tx) {
 		if (depend_tx)
 			dma_wait_for_async_tx(depend_tx);
@@ -68,7 +69,7 @@ do_async_xor(struct dma_device *device,
 		while (!tx)
 			tx = device->device_prep_dma_xor(chan, dma_dest,
 							 dma_src, src_cnt, len,
-							 cb_fn != NULL);
+							 dma_prep_flags);
 	}
 
 	async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param);
@@ -268,6 +269,7 @@ async_xor_zero_sum(struct page *dest, struct page **src_list,
 
 	if (device) {
 		dma_addr_t *dma_src = (dma_addr_t *) src_list;
+		unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0;
 		int i;
 
 		pr_debug("%s: (async) len: %zu\n", __FUNCTION__, len);
@@ -278,7 +280,7 @@ async_xor_zero_sum(struct page *dest, struct page **src_list,
 
 		tx = device->device_prep_dma_zero_sum(chan, dma_src, src_cnt,
 						      len, result,
-						      cb_fn != NULL);
+						      dma_prep_flags);
 		if (!tx) {
 			if (depend_tx)
 				dma_wait_for_async_tx(depend_tx);
@@ -286,7 +288,7 @@ async_xor_zero_sum(struct page *dest, struct page **src_list,
 			while (!tx)
 				tx = device->device_prep_dma_zero_sum(chan,
 					dma_src, src_cnt, len, result,
-					cb_fn != NULL);
+					dma_prep_flags);
 		}
 
 		async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param);