diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 12c7d78..2b5c7ad 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1557,7 +1557,8 @@ i915_gem_object_get_fence_reg(struct drm_gem_object *obj, bool write) struct drm_i915_private *dev_priv = dev->dev_private; struct drm_i915_gem_object *obj_priv = obj->driver_private; struct drm_i915_fence_reg *reg = NULL; - int i, ret; + struct drm_i915_gem_object *old_obj_priv = NULL; + int i, ret, avail; switch (obj_priv->tiling_mode) { case I915_TILING_NONE: @@ -1581,17 +1582,24 @@ i915_gem_object_get_fence_reg(struct drm_gem_object *obj, bool write) /* First try to find a free reg */ try_again: + avail = 0; for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { reg = &dev_priv->fence_regs[i]; if (!reg->obj) break; + + old_obj_priv = reg->obj->driver_private; + if (!old_obj_priv->pin_count) + avail++; } /* None available, try to steal one or wait for a user to finish */ if (i == dev_priv->num_fence_regs) { - struct drm_i915_gem_object *old_obj_priv = NULL; loff_t offset; + if (avail == 0) + return -ENOMEM; + /* Could try to use LRU here instead... */ for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { |
