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drm/i915: Refactor testing obj->mm.pages

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Since we occasionally stuff an error pointer into obj->mm.pages for a
semi-permanent or even permanent failure, we have to be more careful and
not just test against NULL when deciding if the object has a complete
set of its concurrent pages.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171013202621.7276-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2017-10-13 21:26:13 +01:00
parent e4ffc83d3f
commit f1fa4f442c
7 changed files with 27 additions and 19 deletions
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2
drivers/gpu/drm/i915/i915_gem_userptr.c
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@@ -82,7 +82,7 @@ static void cancel_userptr(struct work_struct *work)
/* We are inside a kthread context and can't be interrupted */
if (i915_gem_object_unbind(obj) == 0)
__i915_gem_object_put_pages(obj, I915_MM_NORMAL);
WARN_ONCE(obj->mm.pages,
WARN_ONCE(i915_gem_object_has_pages(obj),
"Failed to release pages: bind_count=%d, pages_pin_count=%d, pin_display=%d\n",
obj->bind_count,
atomic_read(&obj->mm.pages_pin_count),