---

yaml --- r: 321117 b: refs/heads/master c: fe04587 h: refs/heads/master i: 321115: 008bcbe v: v3
git-mirror · Jul 1, 2012 · f57d0cc · f57d0cc
1 parent 32d74f1
commit f57d0cc
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Showing 3 changed files with 15 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 50437bff7f7374f86837986f66e15e73a364f894
+refs/heads/master: fe045874aaf4480386c65baf1acae82af4c5e21f
diff --git a/trunk/drivers/dma/virt-dma.c b/trunk/drivers/dma/virt-dma.c
@@ -39,6 +39,19 @@ dma_cookie_t vchan_tx_submit(struct dma_async_tx_descriptor *tx)
 }
 EXPORT_SYMBOL_GPL(vchan_tx_submit);
 
+struct virt_dma_desc *vchan_find_desc(struct virt_dma_chan *vc,
+	dma_cookie_t cookie)
+{
+	struct virt_dma_desc *vd;
+
+	list_for_each_entry(vd, &vc->desc_issued, node)
+		if (vd->tx.cookie == cookie)
+			return vd;
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(vchan_find_desc);
+
 /*
  * This tasklet handles the completion of a DMA descriptor by
  * calling its callback and freeing it.

diff --git a/trunk/drivers/dma/virt-dma.h b/trunk/drivers/dma/virt-dma.h
@@ -40,8 +40,8 @@ static inline struct virt_dma_chan *to_virt_chan(struct dma_chan *chan)
 }
 
 void vchan_dma_desc_free_list(struct virt_dma_chan *vc, struct list_head *head);
-
 void vchan_init(struct virt_dma_chan *vc, struct dma_device *dmadev);
+struct virt_dma_desc *vchan_find_desc(struct virt_dma_chan *, dma_cookie_t);
 
 /**
  * vchan_tx_prep - prepare a descriptor