提交 40fa60c8 编写于 作者: C Chris Wilson

drm/i915: Catch premature unpinning of pages

Try to catch the violation of unpinning the backing storage whilst still
bound to the GPU.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20161019101147.17342-5-chris@chris-wilson.co.ukReviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
上级 1dc16aac
......@@ -3181,14 +3181,15 @@ i915_gem_object_get_page(struct drm_i915_gem_object *obj, int n)
static inline void i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
{
BUG_ON(obj->pages == NULL);
GEM_BUG_ON(obj->pages == NULL);
obj->pages_pin_count++;
}
static inline void i915_gem_object_unpin_pages(struct drm_i915_gem_object *obj)
{
BUG_ON(obj->pages_pin_count == 0);
GEM_BUG_ON(obj->pages_pin_count == 0);
obj->pages_pin_count--;
GEM_BUG_ON(obj->pages_pin_count < obj->bind_count);
}
enum i915_map_type {
......
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