From: Raslan Darawsheh <rasland@mellanox.com>
To: Stephen Hemminger <stephen@networkplumber.org>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: Matan Azrad <matan@mellanox.com>, "stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v2] common/mlx5: fix uninitialized variable warning
Date: Wed, 29 Apr 2020 12:20:49 +0000 [thread overview]
Message-ID: <VI1PR05MB6718C8E9C7CE80C05FDBF888C2AD0@VI1PR05MB6718.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20200422223130.16842-1-stephen@networkplumber.org>
Hi,
> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Stephen Hemminger
> Sent: Thursday, April 23, 2020 1:32 AM
> To: dev@dpdk.org
> Cc: Stephen Hemminger <stephen@networkplumber.org>; Matan Azrad
> <matan@mellanox.com>
> Subject: [dpdk-dev] [PATCH v2] common/mlx5: fix uninitialized variable
> warning
>
> Gcc 8.3.0 (Debian 10) complains about unitilized variable.
>
> [474/2122] Compiling C object
> 'drivers/a715181@@tmp_rte_common_mlx5@sta/common_mlx5_mlx5_nl.c
> .o'.
> In file included from ../drivers/common/mlx5/mlx5_nl.h:12,
> from ../drivers/common/mlx5/mlx5_nl.c:23:
> ../drivers/common/mlx5/mlx5_nl.c: In function ‘mlx5_nl_enable_roce_get’:
> ../drivers/common/mlx5/mlx5_common.h:68:2: warning: ‘cur_en’ may be
> used uninitialized in this function [-Wmaybe-uninitialized]
> rte_log(RTE_LOG_ ## level, \
> ^~~~~~~
> ../drivers/common/mlx5/mlx5_nl.c:1560:6: note: ‘cur_en’ was declared here
> int cur_en;
> ^~~~~~
>
> The compiler is correct, this variable would only be set if kernel
> netlink response message contains the DEVLINK parameter that flags if
> ROCE is enabled.
>
> Fixes: fa69eaef5f49 ("common/mlx5: support ROCE disable through Netlink")
> Cc: matan@mellanox.com
Added Cc: statble@dpdk.org
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> ---
> v2 - add DCO
>
> drivers/common/mlx5/mlx5_nl.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/common/mlx5/mlx5_nl.c
> b/drivers/common/mlx5/mlx5_nl.c
> index 847e78dbcea6..c6014c3ee0b3 100644
> --- a/drivers/common/mlx5/mlx5_nl.c
> +++ b/drivers/common/mlx5/mlx5_nl.c
> @@ -1557,7 +1557,7 @@ mlx5_nl_enable_roce_get(int nlsk_fd, int
> family_id, const char *pci_addr,
> struct genlmsghdr *genl;
> uint32_t sn = MLX5_NL_SN_GENERATE;
> int ret;
> - int cur_en;
> + int cur_en = 0;
> uint8_t buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
> NLMSG_ALIGN(sizeof(struct genlmsghdr)) +
> NLMSG_ALIGN(sizeof(struct nlattr)) * 4 +
> --
> 2.20.1
Patch applied to next-net-mlx,
Kindest regards
Raslan Darawsheh
parent reply other threads:[~2020-04-29 12:20 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20200422223130.16842-1-stephen@networkplumber.org>]
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