async_tx: export async_tx_quiesce

[linux-2.6-omap-h63xx.git] / crypto / async_tx / async_memset.c

diff --git a/crypto/async_tx/async_memset.c b/crypto/async_tx/async_memset.c
index 66ef6351202ef9cf0f9ddb162524141b92e8b1cf..d48ed22ed1c369075ce58dcc913bf512d5a0d260 100644 (file)
--- a/crypto/async_tx/async_memset.c
+++ b/crypto/async_tx/async_memset.c
@@ -35,7 +35,7 @@
  * @val: fill value
  * @offset: offset in pages to start transaction
  * @len: length in bytes
- * @flags: ASYNC_TX_ASSUME_COHERENT, ASYNC_TX_ACK, ASYNC_TX_DEP_ACK
+ * @flags: ASYNC_TX_ACK, ASYNC_TX_DEP_ACK
  * @depend_tx: memset depends on the result of this transaction
  * @cb_fn: function to call when the memcpy completes
  * @cb_param: parameter to pass to the callback routine
@@ -46,41 +46,33 @@ async_memset(struct page *dest, int val, unsigned int offset,
        struct dma_async_tx_descriptor *depend_tx,
        dma_async_tx_callback cb_fn, void *cb_param)
 {
-       struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_MEMSET);
+       struct dma_chan *chan = async_tx_find_channel(depend_tx, DMA_MEMSET,
+                                                     &dest, 1, NULL, 0, len);
        struct dma_device *device = chan ? chan->device : NULL;
-       int int_en = cb_fn ? 1 : 0;
-       struct dma_async_tx_descriptor *tx = device ?
-               device->device_prep_dma_memset(chan, val, len,
-                       int_en) : NULL;
+       struct dma_async_tx_descriptor *tx = NULL;
 
-       if (tx) { /* run the memset asynchronously */
-               dma_addr_t dma_addr;
-               enum dma_data_direction dir;
+       if (device) {
+               dma_addr_t dma_dest;
+               unsigned long dma_prep_flags = cb_fn ? DMA_PREP_INTERRUPT : 0;
 
-               pr_debug("%s: (async) len: %zu\n", __FUNCTION__, len);
-               dir = (flags & ASYNC_TX_ASSUME_COHERENT) ?
-                       DMA_NONE : DMA_FROM_DEVICE;
+               dma_dest = dma_map_page(device->dev, dest, offset, len,
+                                       DMA_FROM_DEVICE);
 
-               dma_addr = dma_map_page(device->dev, dest, offset, len, dir);
-               tx->tx_set_dest(dma_addr, tx, 0);
+               tx = device->device_prep_dma_memset(chan, dma_dest, val, len,
+                                                   dma_prep_flags);
+       }
 
+       if (tx) {
+               pr_debug("%s: (async) len: %zu\n", __func__, len);
                async_tx_submit(chan, tx, flags, depend_tx, cb_fn, cb_param);
        } else { /* run the memset synchronously */
                void *dest_buf;
-               pr_debug("%s: (sync) len: %zu\n", __FUNCTION__, len);
+               pr_debug("%s: (sync) len: %zu\n", __func__, len);
 
                dest_buf = (void *) (((char *) page_address(dest)) + offset);
 
                /* wait for any prerequisite operations */
-               if (depend_tx) {
-                       /* if ack is already set then we cannot be sure
-                        * we are referring to the correct operation
-                        */
-                       BUG_ON(depend_tx->ack);
-                       if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR)
-                               panic("%s: DMA_ERROR waiting for depend_tx\n",
-                                       __FUNCTION__);
-               }
+               async_tx_quiesce(&depend_tx);
 
                memset(dest_buf, val, len);