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intel: Sanitise strides for linear buffers and SET_TILING

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Ensure that the user doesn't attempt to specify a stride to use with a
linear buffer by forcing such to be zero.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-06-22 11:07:26 +01:00
parent 13e8270504
commit cd34cbeb9f
1 changed files with 6 additions and 0 deletions
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6
intel/intel_bufmgr_gem.c
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@ -1735,6 +1735,12 @@ drm_intel_gem_bo_set_tiling(drm_intel_bo *bo, uint32_t * tiling_mode,
if (bo_gem->global_name == 0) if (bo_gem->global_name == 0)
return 0; return 0;
/* Linear buffers have no stride. By ensuring that we only ever use
* stride 0 with linear buffers, we simplify our code.
*/
if (*tiling_mode === I915_TILING_NONE)
stride = 0;
ret = drm_intel_gem_bo_set_tiling_internal(bo, *tiling_mode, stride); ret = drm_intel_gem_bo_set_tiling_internal(bo, *tiling_mode, stride);
if (ret == 0) if (ret == 0)
drm_intel_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem); drm_intel_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem);