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-rw-r--r--drivers/dma/fsldma.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index ff9194d..1578310 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -462,8 +462,8 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy(
{
struct fsl_dma_chan *fsl_chan;
struct fsl_desc_sw *first = NULL, *prev = NULL, *new;
+ struct list_head *list;
size_t copy;
- LIST_HEAD(link_chain);
if (!chan)
return NULL;
@@ -480,7 +480,7 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy(
if (!new) {
dev_err(fsl_chan->dev,
"No free memory for link descriptor\n");
- return NULL;
+ goto fail;
}
#ifdef FSL_DMA_LD_DEBUG
dev_dbg(fsl_chan->dev, "new link desc alloc %p\n", new);
@@ -515,7 +515,19 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy(
/* Set End-of-link to the last link descriptor of new list*/
set_ld_eol(fsl_chan, new);
- return first ? &first->async_tx : NULL;
+ return &first->async_tx;
+
+fail:
+ if (!first)
+ return NULL;
+
+ list = &first->async_tx.tx_list;
+ list_for_each_entry_safe_reverse(new, prev, list, node) {
+ list_del(&new->node);
+ dma_pool_free(fsl_chan->desc_pool, new, new->async_tx.phys);
+ }
+
+ return NULL;
}
/**
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