Mika Westerberg 3304559e35 thunderbolt: Add function to retrieve DMA device for the ring
This is needed when Thunderbolt service drivers need to DMA map memory
before it is passed down to the ring.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Michael Jamet <michael.jamet@intel.com>
Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-02 11:24:41 -07:00
..
2017-09-07 12:53:14 -07:00
2017-09-13 10:47:14 -07:00
2017-09-10 20:40:00 -07:00
2017-09-07 12:44:53 -07:00