From 294adf7d86226c0e6abeb4475159b03aa315d56f Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Thu, 27 Feb 2014 12:34:51 +0100
Subject: [PATCH] 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>
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