[ofa-general] mlx4: device driver tries to sync DMA memory it has not allocated

[Roland Dreier]

 > Looking at mlx4_write_mtt_chunk() I see that it calls
 > mlx4_table_find() with a pointer to single dma_addr_t - dma_handle -
 > while the dma addresses for the ICM memory is actually a list of
 > different addresses covering possibly different sizes. I think
 > mlx4_table_find() should be changed to support that, and then we can
 > use calls to dma_sync_single_for_cpu()/dma_sync_single_for_device()
 > with the correct dma addresses.

No, I think we're careful that we write MTT ranges that don't cross a
page so there shouldn't be any problem.