Lu Baolu dd6692f1b8 iommu/vt-d: Refactor device_to_iommu() helper
It is refactored in two ways:

- Make it global so that it could be used in other files.

- Make bus/devfn optional so that callers could ignore these two returned
values when they only want to get the coresponding iommu pointer.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20200724014925.15523-9-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2020-07-24 10:51:21 +02:00
..
2019-10-15 13:34:25 +02:00
2020-05-13 12:01:33 +02:00
2020-05-29 17:10:09 +02:00