diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/dmaengine.c | 5 |
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); } |