async_tx: kill ->device_dependency_added

DMA drivers no longer need to be notified of dependency submission
events as async_tx_run_dependencies and async_tx_channel_switch will
handle the scheduling and execution of dependent operations.

[sfr@canb.auug.org.au: extend this for fsldma]
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index 4017d9e7acd2..1517fe4e2d14 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -924,17 +924,6 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan)
         spin_unlock_bh(&ioat_chan->cleanup_lock);
 }
 
-static void ioat_dma_dependency_added(struct dma_chan *chan)
-{
-        struct ioat_dma_chan *ioat_chan = to_ioat_chan(chan);
-        spin_lock_bh(&ioat_chan->desc_lock);
-        if (ioat_chan->pending == 0) {
-                spin_unlock_bh(&ioat_chan->desc_lock);
-                ioat_dma_memcpy_cleanup(ioat_chan);
-        } else
-                spin_unlock_bh(&ioat_chan->desc_lock);
-}
-
 /**
  * ioat_dma_is_complete - poll the status of a IOAT DMA transaction
  * @chan: IOAT DMA channel handle
@@ -1316,7 +1305,6 @@ struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev,
 
         dma_cap_set(DMA_MEMCPY, device->common.cap_mask);
         device->common.device_is_tx_complete = ioat_dma_is_complete;
-        device->common.device_dependency_added = ioat_dma_dependency_added;
         switch (device->version) {
         case IOAT_VER_1_2:
                 device->common.device_prep_dma_memcpy = ioat1_dma_prep_memcpy;