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<p class="MsoNormal"><span style="color:#1F497D">From: Wenjia_zhou <<a href="mailto:zhiyuan_zhu@htc.com">zhiyuan_zhu@htc.com</a>><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">It will causes memory leak, if the function setup_spt_oos fail</span><span style="color:#1F497D">,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">in the function intel_gvt_init_gtt,</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">which allocated by get_zeroed_page and mapped by dma_map_page.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">After STP oos initialize fail, unmap and free the page,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">It will fix this issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Signed-off-by: Wenjia_zhou <<a href="mailto:zhiyuan_zhu@htc.com">zhiyuan_zhu@htc.com</a>><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">---<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">drivers/gpu/drm/i915/gvt/gtt.c | 2 ++<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">1 file changed, 2 insertions(+)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">index c6f0077..f2b352b 100644<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">--- a/drivers/gpu/drm/i915/gvt/gtt.c<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">+++ b/drivers/gpu/drm/i915/gvt/gtt.c<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">@@ -2254,6 +2254,8 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> ret = setup_spt_oos(gvt);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> if (ret) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> gvt_err("fail to initialize SPT oos\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">+ dma_unmap_page(dev, daddr, 4096, PCI_DMA_BIDIRECTIONAL);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">+ __free_page(gvt->gtt.scratch_ggtt_page);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> return ret;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">---<o:p></o:p></span></p>
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