From: Tiejun Chen Subject: [PATCH] kvm: coalesced_mmio: remove one redundant check inside of coalesced_mmio_in_range() Date: Thu, 11 Dec 2014 11:02:41 +0800 Message-ID: <1418266961-27277-1-git-send-email-tiejun.chen@intel.com> Cc: kvm@vger.kernel.org To: pbonzini@redhat.com Return-path: Received: from mga02.intel.com ([134.134.136.20]:48911 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933176AbaLKDEn (ORCPT ); Wed, 10 Dec 2014 22:04:43 -0500 Sender: kvm-owner@vger.kernel.org List-ID: We already check 'len' above to make sure it already isn't negative here, so indeed, (addr + len < addr) should never be happened. Signed-off-by: Tiejun Chen --- virt/kvm/coalesced_mmio.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/virt/kvm/coalesced_mmio.c b/virt/kvm/coalesced_mmio.c index 00d8642..60f59cd 100644 --- a/virt/kvm/coalesced_mmio.c +++ b/virt/kvm/coalesced_mmio.c @@ -30,8 +30,6 @@ static int coalesced_mmio_in_range(struct kvm_coalesced_mmio_dev *dev, */ if (len < 0) return 0; - if (addr + len < addr) - return 0; if (addr < dev->zone.addr) return 0; if (addr + len > dev->zone.addr + dev->zone.size) -- 1.9.1