From: Mika Westerberg
Date: Fri, 24 Nov 2017 14:05:36 +0300
> Commit 86dabda426ac ("net: thunderbolt: Clear finished Tx frame bus
> address in tbnet_tx_callback()") fixed a DMA-API violation where the
> driver called dma_unmap_page() in tbnet_free_buffers() for a bus address
> that might already
Commit 86dabda426ac ("net: thunderbolt: Clear finished Tx frame bus
address in tbnet_tx_callback()") fixed a DMA-API violation where the
driver called dma_unmap_page() in tbnet_free_buffers() for a bus address
that might already be unmapped. The fix was to zero out the bus address
of a frame in tbn
