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authorDan Williams <dan.j.williams@intel.com>2008-04-17 20:17:25 -0700
committerDan Williams <dan.j.williams@intel.com>2008-04-17 13:25:05 -0700
commit19242d7233df7d658405d4b7ee1758d21414cfaa (patch)
tree4bffa2700c30fdb454dfa150115a0607c6cf3d2a /drivers/dma/dmaengine.c
parent1c62979ed29a8e2bf9fbe1db101c81a0089676f8 (diff)
downloadop-kernel-dev-19242d7233df7d658405d4b7ee1758d21414cfaa.zip
op-kernel-dev-19242d7233df7d658405d4b7ee1758d21414cfaa.tar.gz
async_tx: fix multiple dependency submission
Shrink struct dma_async_tx_descriptor and introduce async_tx_channel_switch to properly inject a channel switch interrupt in the descriptor stream. This simplifies the locking model as drivers no longer need to handle dma_async_tx_descriptor.lock. Acked-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/dmaengine.c')
-rw-r--r--drivers/dma/dmaengine.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 8db0e7f..9cb898a 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -600,8 +600,6 @@ void dma_async_tx_descriptor_init(struct dma_async_tx_descriptor *tx,
{
tx->chan = chan;
spin_lock_init(&tx->lock);
- INIT_LIST_HEAD(&tx->depend_node);
- INIT_LIST_HEAD(&tx->depend_list);
}
EXPORT_SYMBOL(dma_async_tx_descriptor_init);
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