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drm/i915: Skip stolen region initialisation if none is reserved

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Paulo reported that if he set the amount of reserved memory to 0, then
we emitted a warning about a conflict before disabling our use of stolen
memory. This was introduced with

commit eaba1b8f3379b5d100bd146b9a41d28348bdfd09
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu Jul 4 12:28:35 2013 +0100

    drm/i915: Verify that our stolen memory doesn't conflict

and is simply fixed by checking for a no reservation first.

Reported-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2013-09-05 13:40:25 +01:00 committed by Daniel Vetter
parent 122f46bada
commit 6644a4e942
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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@ -201,6 +201,9 @@ int i915_gem_init_stolen(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
int bios_reserved = 0;
if (dev_priv->gtt.stolen_size == 0)
return 0;
dev_priv->mm.stolen_base = i915_stolen_to_physical(dev);
if (dev_priv->mm.stolen_base == 0)
return 0;