Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 40fa60c8 authored by Chris Wilson's avatar Chris Wilson
Browse files

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: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20161019101147.17342-5-chris@chris-wilson.co.uk


Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
parent 1dc16aac

drivers/gpu/drm/i915/i915_drv.h

+3 −2
Original line number Diff line number Diff line
@@ -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 {