Merge tag 'dmaengine-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw...

[karo-tx-linux.git] / drivers / dma / ioat / dma.c

diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index 659518015972c8253565e3137c0914bf1287eae0..73b2b65cb1deed2ccfb16d5f3e81dbeaa47f7ec1 100644 (file)
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -40,6 +40,8 @@
 #include "registers.h"
 #include "hw.h"
 
+#include "../dmaengine.h"
+
 int ioat_pending_level = 4;
 module_param(ioat_pending_level, int, 0644);
 MODULE_PARM_DESC(ioat_pending_level,
@@ -107,6 +109,7 @@ void ioat_init_channel(struct ioatdma_device *device, struct ioat_chan_common *c
        chan->reg_base = device->reg_base + (0x80 * (idx + 1));
        spin_lock_init(&chan->cleanup_lock);
        chan->common.device = dma;
+       dma_cookie_init(&chan->common);
        list_add_tail(&chan->common.device_node, &dma->channels);
        device->idx[idx] = chan;
        init_timer(&chan->timer);
@@ -235,12 +238,7 @@ static dma_cookie_t ioat1_tx_submit(struct dma_async_tx_descriptor *tx)
 
        spin_lock_bh(&ioat->desc_lock);
        /* cookie incr and addition to used_list must be atomic */
-       cookie = c->cookie;
-       cookie++;
-       if (cookie < 0)
-               cookie = 1;
-       c->cookie = cookie;
-       tx->cookie = cookie;
+       cookie = dma_cookie_assign(tx);
        dev_dbg(to_dev(&ioat->base), "%s: cookie: %d\n", __func__, cookie);
 
        /* write address into NextDescriptor field of last desc in chain */
@@ -603,8 +601,7 @@ static void __cleanup(struct ioat_dma_chan *ioat, dma_addr_t phys_complete)
                 */
                dump_desc_dbg(ioat, desc);
                if (tx->cookie) {
-                       chan->completed_cookie = tx->cookie;
-                       tx->cookie = 0;
+                       dma_cookie_complete(tx);
                        ioat_dma_unmap(chan, tx->flags, desc->len, desc->hw);
                        ioat->active -= desc->hw->tx_cnt;
                        if (tx->callback) {
@@ -733,13 +730,15 @@ ioat_dma_tx_status(struct dma_chan *c, dma_cookie_t cookie,
 {
        struct ioat_chan_common *chan = to_chan_common(c);
        struct ioatdma_device *device = chan->device;
+       enum dma_status ret;
 
-       if (ioat_tx_status(c, cookie, txstate) == DMA_SUCCESS)
-               return DMA_SUCCESS;
+       ret = dma_cookie_status(c, cookie, txstate);
+       if (ret == DMA_SUCCESS)
+               return ret;
 
        device->cleanup_fn((unsigned long) c);
 
-       return ioat_tx_status(c, cookie, txstate);
+       return dma_cookie_status(c, cookie, txstate);
 }
 
 static void ioat1_dma_start_null_desc(struct ioat_dma_chan *ioat)