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-rw-r--r--drivers/dma/dmaengine.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 54138b57b37c..f878c808466e 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -953,9 +953,12 @@ static void dmaengine_unmap(struct kref *kref)
dma_unmap_page(dev, unmap->addr[i], unmap->len,
DMA_FROM_DEVICE);
cnt += unmap->bidi_cnt;
- for (; i < cnt; i++)
+ for (; i < cnt; i++) {
+ if (unmap->addr[i] == 0)
+ continue;
dma_unmap_page(dev, unmap->addr[i], unmap->len,
DMA_BIDIRECTIONAL);
+ }
mempool_free(unmap, __get_unmap_pool(cnt)->pool);
}
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