From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Date: Mon, 9 Jul 2018 10:01:07 -0500
Subject: staging: fsl-dpaa2/eth: Fix DMA mapping direction
Git-commit: 466bcdc1fa303be175c45d054bb00effc575033a
Patch-mainline: v4.19-rc1
References: fate#326530,fate#326531,fate#326535,fate#326538,fate#326539
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@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
index 396371728aa1..537d5bb5e294 100644
--- 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_priv *priv, u64 *buf_array, int count)
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);
}
}
--
2.11.0