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authorBrian King <brking@linux.vnet.ibm.com>2017-04-19 20:44:41 +0300
committerDavid S. Miller <davem@davemloft.net>2017-04-21 20:33:52 +0300
commit59af56c25bc34d4e98820c694d48fd5145fb6e4f (patch)
tree30a4279d483aeb7ae4af50ca487516703a12d2c8 /drivers/net/ethernet/ibm
parent993a82b0ff03b356c0001561ca7035b02c5e7bae (diff)
downloadlinux-59af56c25bc34d4e98820c694d48fd5145fb6e4f.tar.xz
ibmvnic: Unmap longer term buffer before free
Make sure we unregister long term buffers from the adapter prior to DMA unmapping it and freeing the buffer. Failure to do so could result in a DMA to a now invalid address. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ibm')
-rw-r--r--drivers/net/ethernet/ibm/ibmvnic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 625896de25f7..c10bae7823e0 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -193,9 +193,9 @@ static void free_long_term_buff(struct ibmvnic_adapter *adapter,
if (!ltb->buff)
return;
- dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
if (!adapter->failover)
send_request_unmap(adapter, ltb->map_id);
+ dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
}
static void replenish_rx_pool(struct ibmvnic_adapter *adapter,