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drm/i915/gvt: Fix a memory leak in intel_gvt_init_gtt()

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It will causes memory leak, if the function setup_spt_oos() fail,
in the function intel_gvt_init_gtt(),
which allocated by get_zeroed_page() and mapped by dma_map_page().

Unmap and free the page,  after STP oos initialize fail,
it will fix this issue.

Signed-off-by: Zhou, Wenjia <zhiyuan_zhu@htc.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Zhou, Wenjia 2017-07-04 15:47:00 +08:00 committed by Zhenyu Wang
parent 7581d5ca2b
commit 0de9870989
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/gvt/gtt.c
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@ -2259,6 +2259,8 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)
ret = setup_spt_oos(gvt);
if (ret) {
gvt_err("fail to initialize SPT oos\n");
dma_unmap_page(dev, daddr, 4096, PCI_DMA_BIDIRECTIONAL);
__free_page(gvt->gtt.scratch_ggtt_page);
return ret;
}
}