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drm/vc4: Validate that WAIT_BO padding is cleared. 

This is ABI future-proofing if we ever want to extend the pad to mean
something.

Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Eric Anholt 2016-01-25 13:05:00 -08:00
parent 388f7b1d6e
commit e001523666
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/vc4/vc4_gem.c
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@ -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);