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Sat, 24 Jan 2026 22:46:17 -0800 (PST) Message-ID: <56f850d0-efbe-462d-9034-d1c11453cff2@gmail.com> Date: Sun, 25 Jan 2026 08:46:23 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 net] net/mlx5: Fix return type mismatch in mlx5_esw_vport_vhca_id() To: Zeng Chi , saeedm@nvidia.com, leon@kernel.org, tariqt@nvidia.com, mbloch@nvidia.com, davem@davemloft.net, andrew+netdev@lunn.ch, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, feliu@nvidia.com, parav@nvidia.com, witu@nvidia.com, ajayachandra@nvidia.com Cc: netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Zeng Chi References: <20260123085749.1401969-1-zeng_chi911@163.com> Content-Language: en-US From: Tariq Toukan In-Reply-To: <20260123085749.1401969-1-zeng_chi911@163.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 23/01/2026 10:57, Zeng Chi wrote: > From: Zeng Chi > > The function mlx5_esw_vport_vhca_id() is declared to return bool, > but returns -EOPNOTSUPP (-45), which is an int error code. This > causes a signedness bug as reported by smatch. > > This patch fixes this smatch report: > drivers/net/ethernet/mellanox/mlx5/core/eswitch.h:981 mlx5_esw_vport_vhca_id() > warn: signedness bug returning '(-45)' > > Fixes: 1baf30426553 ("net/mlx5: E-Switch, Set/Query hca cap via vhca id") > Reviewed-by: Parav Pandit > Signed-off-by: Zeng Chi > --- > v2 -> v3: > - Shortened the commit ID in the `Fixes:` tag to 12 characters as suggested. > - Added a `Reviewed-by:` tag from Parav Pandit . > > v2:Added the required Fixes tag and specified target branch net in subject prefix > --- > drivers/net/ethernet/mellanox/mlx5/core/eswitch.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h > index ad1073f7b79f..e7fe43799b23 100644 > --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h > +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h > @@ -1009,7 +1009,7 @@ mlx5_esw_host_functions_enabled(const struct mlx5_core_dev *dev) > static inline bool > mlx5_esw_vport_vhca_id(struct mlx5_eswitch *esw, u16 vportn, u16 *vhca_id) > { > - return -EOPNOTSUPP; > + return false; > } > > #endif /* CONFIG_MLX5_ESWITCH */ Reviewed-by: Tariq Toukan