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drm/i915: WARN if the bios reserved range is bigger than stolen size

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v2: Bail out if we hit the WARN_ON to avoid fallout later on. Spotted
by Chris Wilson.

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2013-07-09 14:44:27 +02:00
parent 36c0cc616e
commit 897f9ed00a
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_gem_stolen.c
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@ -215,6 +215,9 @@ int i915_gem_init_stolen(struct drm_device *dev)
if (IS_VALLEYVIEW(dev))
bios_reserved = 1024*1024; /* top 1M on VLV/BYT */
if (WARN_ON(bios_reserved > dev_priv->gtt.stolen_size))
return 0;
/* Basic memrange allocator for stolen space */
drm_mm_init(&dev_priv->mm.stolen, 0, dev_priv->gtt.stolen_size -
bios_reserved);