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From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: Gonglei <arei.gonglei@huawei.com>
Subject: [Qemu-devel] [PULL 07/12] nvme: remove superfluous check
Date: Mon, 17 Nov 2014 18:08:14 +0100	[thread overview]
Message-ID: <1416244099-7217-8-git-send-email-pbonzini@redhat.com> (raw)
In-Reply-To: <1416244099-7217-1-git-send-email-pbonzini@redhat.com>

From: Gonglei <arei.gonglei@huawei.com>

Operands don't affect result (CONSTANT_EXPRESSION_RESULT)
((n->bar.aqa >> AQA_ASQS_SHIFT) & AQA_ASQS_MASK) > 4095
is always false regardless of the values of its operands.
This occurs as the logical second operand of '||'.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/block/nvme.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index b6263dc..1327658 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -583,8 +583,7 @@ static int nvme_start_ctrl(NvmeCtrl *n)
             NVME_CC_IOCQES(n->bar.cc) > NVME_CTRL_CQES_MAX(n->id_ctrl.cqes) ||
             NVME_CC_IOSQES(n->bar.cc) < NVME_CTRL_SQES_MIN(n->id_ctrl.sqes) ||
             NVME_CC_IOSQES(n->bar.cc) > NVME_CTRL_SQES_MAX(n->id_ctrl.sqes) ||
-            !NVME_AQA_ASQS(n->bar.aqa) || NVME_AQA_ASQS(n->bar.aqa) > 4095 ||
-            !NVME_AQA_ACQS(n->bar.aqa) || NVME_AQA_ACQS(n->bar.aqa) > 4095) {
+            !NVME_AQA_ASQS(n->bar.aqa) || !NVME_AQA_ACQS(n->bar.aqa)) {
         return -1;
     }
 
-- 
1.8.3.1

  parent reply	other threads:[~2014-11-17 17:08 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-17 17:08 [Qemu-devel] [PULL 00/12] Coverity fixes for 2.2.0-rc2 Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 01/12] libcacard: fix resource leak Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 02/12] l2tpv3: fix possible double free Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 03/12] l2tpv3: fix fd leak Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 04/12] mips_mipssim: fix use-after-free for filename Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 05/12] qga: fix false negative argument passing Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 06/12] loader: fix NEGATIVE_RETURNS Paolo Bonzini
2014-11-17 17:08 ` Paolo Bonzini [this message]
2014-11-17 17:08 ` [Qemu-devel] [PULL 08/12] acl: fix memory leak Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 09/12] qemu-char: fix MISSING_COMMA Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 10/12] shpc: fix error propaagation Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 11/12] target-cris/translate.c: fix out of bounds read Paolo Bonzini
2014-11-17 17:08 ` [Qemu-devel] [PULL 12/12] hcd-musb: fix dereference null return value Paolo Bonzini
2014-11-17 19:29 ` [Qemu-devel] [PULL 00/12] Coverity fixes for 2.2.0-rc2 Peter Maydell

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