From: Brian King Date: Wed, 19 Apr 2017 17:44:41 +0000 (-0400) Subject: ibmvnic: Unmap longer term buffer before free X-Git-Tag: android-x86-8.1-r1~3658^2~139^2~7 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=59af56c25bc34d4e98820c694d48fd5145fb6e4f;p=android-x86%2Fkernel.git 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 Signed-off-by: Nathan Fontenot Signed-off-by: David S. Miller --- 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,