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| author | Eric Anholt <eric@anholt.net> | 2008-11-26 13:58:13 -0800 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2008-12-04 11:24:47 +1000 |
| commit | 0235439232cb6f8a54f8976aa8330c1c98ebad0b (patch) | |
| tree | 15acdd628efe011f127d7b8ecc2fb65ce4131705 /drivers/gpu | |
| parent | ac94a962b24a88ea5d00f4697550d9982f300751 (diff) | |
| download | kernel-crypto-0235439232cb6f8a54f8976aa8330c1c98ebad0b.tar.gz kernel-crypto-0235439232cb6f8a54f8976aa8330c1c98ebad0b.tar.xz kernel-crypto-0235439232cb6f8a54f8976aa8330c1c98ebad0b.zip | |
drm/i915: Return error in i915_gem_set_to_gtt_domain if we're not in the GTT.
It's only for flushing caches appropriately for GTT access, not for actually
getting it there. Prevents potential smashing of cpu read/write domains on
unbound objects.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 174c0c3ba0b..3fde82be014 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -435,6 +435,13 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, #endif if (read_domains & I915_GEM_DOMAIN_GTT) { ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); + + /* Silently promote "you're not bound, there was nothing to do" + * to success, since the client was just asking us to + * make sure everything was done. + */ + if (ret == -EINVAL) + ret = 0; } else { ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); } @@ -1304,6 +1311,10 @@ i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) struct drm_i915_gem_object *obj_priv = obj->driver_private; int ret; + /* Not valid to be called on unbound objects. */ + if (obj_priv->gtt_space == NULL) + return -EINVAL; + i915_gem_object_flush_gpu_write_domain(obj); /* Wait on any GPU rendering and flushing to occur. */ ret = i915_gem_object_wait_rendering(obj); |