4.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ioana Radulescu <ruxandra.radulescu@xxxxxxx>
[ Upstream commit 466bcdc1fa303be175c45d054bb00effc575033a ]
We are using DMA_FROM_DEVICE when mapping RX frame buffers,
but DMA_BIDIRECTIONAL for unmap. Fix the direction for DMA
unmapping operation.
Fixes: 87eb55e418b7 ("staging: fsl-dpaa2/eth: Fix potential endless loop")
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
@@ -767,7 +767,7 @@ static void free_bufs(struct dpaa2_eth_p
for (i = 0; i < count; i++) {
vaddr = dpaa2_iova_to_virt(priv->iommu_domain, buf_array[i]);
dma_unmap_single(dev, buf_array[i], DPAA2_ETH_RX_BUF_SIZE,
- DMA_BIDIRECTIONAL);
+ DMA_FROM_DEVICE);
skb_free_frag(vaddr);
}
}
