mv_xor: implement a private tx_list

Drop mv_xor's use of tx_list from struct dma_async_tx_descriptor in
preparation for removal of this field.

Cc: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index 3f23eabe09f2076cc05ddc1805129615d1dde6bc..466ab10c1ff10de1d001178fde9fdce203c410e3 100644 (file)
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -517,7 +517,7 @@ retry:
                        }
                        alloc_tail->group_head = alloc_start;
                        alloc_tail->async_tx.cookie = -EBUSY;
-                       list_splice(&chain, &alloc_tail->async_tx.tx_list);
+                       list_splice(&chain, &alloc_tail->tx_list);
                        mv_chan->last_used = last_used;
                        mv_desc_clear_next_desc(alloc_start);
                        mv_desc_clear_next_desc(alloc_tail);
@@ -565,14 +565,14 @@ mv_xor_tx_submit(struct dma_async_tx_descriptor *tx)
        cookie = mv_desc_assign_cookie(mv_chan, sw_desc);
 
        if (list_empty(&mv_chan->chain))
-               list_splice_init(&sw_desc->async_tx.tx_list, &mv_chan->chain);
+               list_splice_init(&sw_desc->tx_list, &mv_chan->chain);
        else {
                new_hw_chain = 0;
 
                old_chain_tail = list_entry(mv_chan->chain.prev,
                                            struct mv_xor_desc_slot,
                                            chain_node);
-               list_splice_init(&grp_start->async_tx.tx_list,
+               list_splice_init(&grp_start->tx_list,
                                 &old_chain_tail->chain_node);
 
                if (!mv_can_chain(grp_start))
@@ -632,6 +632,7 @@ static int mv_xor_alloc_chan_resources(struct dma_chan *chan)
                slot->async_tx.tx_submit = mv_xor_tx_submit;
                INIT_LIST_HEAD(&slot->chain_node);
                INIT_LIST_HEAD(&slot->slot_node);
+               INIT_LIST_HEAD(&slot->tx_list);
                hw_desc = (char *) mv_chan->device->dma_desc_pool;
                slot->async_tx.phys =
                        (dma_addr_t) &hw_desc[idx * MV_XOR_SLOT_SIZE];

diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h
index 06cafe1ef521b06acaa8a2ea90ee5c76afbf72fb..977b592e976bfa9eea31b64cb0ef5aa8c1ff6b49 100644 (file)
--- a/drivers/dma/mv_xor.h
+++ b/drivers/dma/mv_xor.h
@@ -126,9 +126,8 @@ struct mv_xor_chan {
  * @idx: pool index
  * @unmap_src_cnt: number of xor sources
  * @unmap_len: transaction bytecount
+ * @tx_list: list of slots that make up a multi-descriptor transaction
  * @async_tx: support for the async_tx api
- * @group_list: list of slots that make up a multi-descriptor transaction
- *     for example transfer lengths larger than the supported hw max
  * @xor_check_result: result of zero sum
  * @crc32_result: result crc calculation
  */
@@ -145,6 +144,7 @@ struct mv_xor_desc_slot {
        u16                     unmap_src_cnt;
        u32                     value;
        size_t                  unmap_len;
+       struct list_head        tx_list;
        struct dma_async_tx_descriptor  async_tx;
        union {
                u32             *xor_check_result;