drm/msm: Disable preemption on all 5xx targets
commit 7b3f3948c8
upstream.
Temporarily disable preemption on a5xx targets pending some improvements
to protect the RPTR shadow from being corrupted.
Cc: stable@vger.kernel.org
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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@ -1451,7 +1451,8 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)
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check_speed_bin(&pdev->dev);
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ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 4);
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/* Restricting nr_rings to 1 to temporarily disable preemption */
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ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1);
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if (ret) {
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a5xx_destroy(&(a5xx_gpu->base.base));
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return ERR_PTR(ret);
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