NTB: Remove dma_sync_wait from ntb_async_rx

[linux-beck.git] / drivers / ntb / ntb_transport.c

diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index 777436c47679d69c5ebe79046185057236ef8d48..f6aae0fbde48d3a0a1d466f3ff4b44d60f05986c 100644 (file)
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -1233,18 +1233,18 @@ static void ntb_async_rx(struct ntb_queue_entry *entry, void *offset)
                goto err;
 
        if (len < copy_bytes)
-               goto err_wait;
+               goto err;
 
        device = chan->device;
        pay_off = (size_t)offset & ~PAGE_MASK;
        buff_off = (size_t)buf & ~PAGE_MASK;
 
        if (!is_dma_copy_aligned(device, pay_off, buff_off, len))
-               goto err_wait;
+               goto err;
 
        unmap = dmaengine_get_unmap_data(device->dev, 2, GFP_NOWAIT);
        if (!unmap)
-               goto err_wait;
+               goto err;
 
        unmap->len = len;
        unmap->addr[0] = dma_map_page(device->dev, virt_to_page(offset),
@@ -1287,12 +1287,6 @@ err_set_unmap:
        dmaengine_unmap_put(unmap);
 err_get_unmap:
        dmaengine_unmap_put(unmap);
-err_wait:
-       /* If the callbacks come out of order, the writing of the index to the
-        * last completed will be out of order.  This may result in the
-        * receive stalling forever.
-        */
-       dma_sync_wait(chan, qp->last_cookie);
 err:
        ntb_memcpy_rx(entry, offset);
        qp->rx_memcpy++;