drm/i915: Initialize obj->pages before use by i915_gem_object_do_bit17_swizzle()
If we leave obj->pages set to NULL before attempting to deswizzle them,
then an OOPS is well deserved.
Fixes regression introduced in commit 9da3da660d
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri Jun 1 15:20:22 2012 +0100
drm/i915: Replace the array of pages with a scatterlist
Reported-and-tested-by: Krzysztof Kolasa
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -1825,10 +1825,11 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj)
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sg_set_page(sg, page, PAGE_SIZE, 0);
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sg_set_page(sg, page, PAGE_SIZE, 0);
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}
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}
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obj->pages = st;
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if (i915_gem_object_needs_bit17_swizzle(obj))
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if (i915_gem_object_needs_bit17_swizzle(obj))
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i915_gem_object_do_bit_17_swizzle(obj);
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i915_gem_object_do_bit_17_swizzle(obj);
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obj->pages = st;
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return 0;
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return 0;
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err_pages:
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err_pages:
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