Xen 2016/04/20
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commit
fa59dd9582
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@ -775,7 +775,7 @@ static void xenfb_handle_events(struct XenFB *xenfb)
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prod = page->out_prod;
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out_cons = page->out_cons;
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if (prod - out_cons >= XENFB_OUT_RING_LEN) {
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if (prod - out_cons > XENFB_OUT_RING_LEN) {
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return;
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}
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xen_rmb(); /* ensure we see ring contents up to prod */
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