From: Chen Qun <kuhn.chenqun@huawei.com>
To: <qemu-devel@nongnu.org>, <qemu-trivial@nongnu.org>
Cc: zhang.zhanghailiang@huawei.com,
"Michael S. Tsirkin" <mst@redhat.com>,
"Jason Wang" <jasowang@redhat.com>,
pannengyuan@huawei.com, "Euler Robot" <euler.robot@huawei.com>,
"Chen Qun" <kuhn.chenqun@huawei.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: [PATCH v2 06/10] hw/net/virtio-net:Remove redundant statement in virtio_net_rsc_tcp_ctrl_check()
Date: Tue, 25 Aug 2020 19:24:43 +0800 [thread overview]
Message-ID: <20200825112447.126308-7-kuhn.chenqun@huawei.com> (raw)
In-Reply-To: <20200825112447.126308-1-kuhn.chenqun@huawei.com>
Clang static code analyzer show warning:
hw/net/virtio-net.c:2077:5: warning: Value stored to 'tcp_flag' is never read
tcp_flag &= VIRTIO_NET_TCP_FLAG;
^ ~~~~~~~~~~~~~~~~~~~
The 'VIRTIO_NET_TCP_FLAG' is '0x3F'. The last ‘tcp_flag’ assignment statement is
the same as that of the first two statements.
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
---
hw/net/virtio-net.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index a1fe9e9285..cb0d27084c 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -2075,7 +2075,6 @@ static int virtio_net_rsc_tcp_ctrl_check(VirtioNetRscChain *chain,
tcp_flag = htons(tcp->th_offset_flags);
tcp_hdr = (tcp_flag & VIRTIO_NET_TCP_HDR_LENGTH) >> 10;
tcp_flag &= VIRTIO_NET_TCP_FLAG;
- tcp_flag = htons(tcp->th_offset_flags) & 0x3F;
if (tcp_flag & TH_SYN) {
chain->stat.tcp_syn++;
return RSC_BYPASS;
--
2.23.0
next prev parent reply other threads:[~2020-08-25 11:32 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-25 11:24 [PATCH v2 00/10] trivial patchs for static code analyzer fixes Chen Qun
2020-08-25 11:24 ` [PATCH v2 01/10] hw/arm/virt-acpi-build:Remove dead assignment in build_madt() Chen Qun
2020-08-26 1:25 ` Li Qiang
2020-08-25 11:24 ` [PATCH v2 02/10] hw/arm/omap1:Remove redundant statement in omap_clkdsp_read() Chen Qun
2020-08-25 12:35 ` Peter Maydell
2020-08-26 1:26 ` Li Qiang
2020-08-25 11:24 ` [PATCH v2 03/10] target/arm/translate-a64:Remove dead assignment in handle_scalar_simd_shli() Chen Qun
2020-08-25 12:37 ` Peter Maydell
2020-08-26 2:42 ` Chenqun (kuhn)
2020-08-25 11:24 ` [PATCH v2 04/10] target/arm/translate-a64:Remove redundant statement in disas_simd_two_reg_misc_fp16() Chen Qun
2020-08-25 12:38 ` Peter Maydell
2020-08-25 11:24 ` [PATCH v2 05/10] hw/virtio/vhost-user:Remove dead assignment in scrub_shadow_regions() Chen Qun
2020-08-26 10:23 ` Li Qiang
2020-08-25 11:24 ` Chen Qun [this message]
2020-08-26 1:35 ` [PATCH v2 06/10] hw/net/virtio-net:Remove redundant statement in virtio_net_rsc_tcp_ctrl_check() Li Qiang
2020-08-25 11:24 ` [PATCH v2 07/10] vfio/platform: Remove dead assignment in vfio_intp_interrupt() Chen Qun
2020-08-25 15:00 ` Stefan Hajnoczi
2020-08-26 1:38 ` Li Qiang
2020-08-26 1:47 ` Chenqun (kuhn)
2020-08-26 10:14 ` Li Qiang
2020-08-25 11:24 ` [PATCH v2 08/10] usb/bus: Remove dead assignment in usb_get_fw_dev_path() Chen Qun
2020-08-25 14:39 ` Markus Armbruster
2020-08-26 1:59 ` Chenqun (kuhn)
2020-08-26 2:25 ` Chenqun (kuhn)
2020-08-25 11:24 ` [PATCH v2 09/10] hw/intc: Remove redundant statement in exynos4210_combiner_read() Chen Qun
2020-08-25 12:41 ` Peter Maydell
2020-08-27 7:00 ` Chenqun (kuhn)
2020-08-27 9:28 ` Peter Maydell
2020-08-25 11:24 ` [PATCH v2 10/10] hw/display/vga:Remove redundant statement in vga_draw_graphic() Chen Qun
2020-08-26 1:54 ` Li Qiang
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