tree 82013a33770470723552a04a5893904917281515
parent 4beb6d9fa6a74c189884be4913cfdd24fc8758ac
author Thomas Hellstrom <thellstrom@vmware.com> 1393500891 +0100
committer Thomas Hellstrom <thellstrom@vmware.com> 1396012742 +0100

drm/vmwgfx: Use a per-device semaphore for reservation protection

Don't use a per-master semaphore (ttm lock) for reservation protection, but
rather a per-device semaphore. This is needed since clients connecting using
render nodes aren't master aware.

The ttm lock used should probably be replaced with a reader-write semaphore
once the function down_xx_interruptible() is available.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>