From: Daniel Vetter Date: Tue, 9 Jul 2013 12:44:27 +0000 (+0200) Subject: drm/i915: WARN if the bios reserved range is bigger than stolen size X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=897f9ed00a906dd3edc69f64d590bba87c45617b;p=deliverable%2Flinux.git drm/i915: WARN if the bios reserved range is bigger than stolen size v2: Bail out if we hit the WARN_ON to avoid fallout later on. Spotted by Chris Wilson. Suggested-by: Chris Wilson Cc: Chris Wilson Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c index a3ce2cbb9221..76c3b8699168 100644 --- a/drivers/gpu/drm/i915/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c @@ -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);