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drm/vc4: Validate that WAIT_BO padding is cleared.
author
Eric Anholt
<eric@anholt.net>
Mon, 25 Jan 2016 21:05:00 +0000
(13:05 -0800)
committer
Eric Anholt
<eric@anholt.net>
Tue, 16 Feb 2016 20:20:57 +0000
(12:20 -0800)
This is ABI future-proofing if we ever want to extend the pad to mean
something.
Signed-off-by: Eric Anholt <eric@anholt.net>
drivers/gpu/drm/vc4/vc4_gem.c
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diff --git
a/drivers/gpu/drm/vc4/vc4_gem.c
b/drivers/gpu/drm/vc4/vc4_gem.c
index
48ce30a
..
cc89ffc
100644
(file)
--- a/
drivers/gpu/drm/vc4/vc4_gem.c
+++ b/
drivers/gpu/drm/vc4/vc4_gem.c
@@
-746,6
+746,9
@@
vc4_wait_bo_ioctl(struct drm_device *dev, void *data,
struct drm_gem_object *gem_obj;
struct vc4_bo *bo;
+ if (args->pad != 0)
+ return -EINVAL;
+
gem_obj = drm_gem_object_lookup(dev, file_priv, args->handle);
if (!gem_obj) {
DRM_ERROR("Failed to look up GEM BO %d\n", args->handle);