drm/i915: fix error return code in init_pipe_control()
Fix to return -ENOMEM in the kmap() error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -464,9 +464,11 @@ init_pipe_control(struct intel_ring_buffer *ring)
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goto err_unref;
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pc->gtt_offset = obj->gtt_offset;
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pc->cpu_page = kmap(sg_page(obj->pages->sgl));
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if (pc->cpu_page == NULL)
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pc->cpu_page = kmap(sg_page(obj->pages->sgl));
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if (pc->cpu_page == NULL) {
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ret = -ENOMEM;
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goto err_unpin;
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}
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DRM_DEBUG_DRIVER("%s pipe control offset: 0x%08x\n",
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ring->name, pc->gtt_offset);
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