| Message ID | 20170529130030.244337-1-arnd@arndb.de (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
On Mon, May 29, 2017 at 4:00 PM, Arnd Bergmann <arnd@arndb.de> wrote: > Building the driver with CONFIG_SMP disabled results in a harmless > warning: > > ethernet/mellanox/mlx5/core/main.c: In function 'mlx5_irq_set_affinity_hint': > ethernet/mellanox/mlx5/core/main.c:615:6: error: unused variable 'irq' [-Werror=unused-variable] > > It's better to express the conditional compilation using IS_ENABLED() > here, as that lets the compiler see what the intented use for the variable > is, and that it can be silently discarded. > > Fixes: b665d98edc9a ("net/mlx5: Tolerate irq_set_affinity_hint() failures") > igned-off-by: Arnd Bergmann <arnd@arndb.de> > --- > drivers/net/ethernet/mellanox/mlx5/core/main.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c > index 361cd112bb5b..9274d93d3183 100644 > --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c > +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c > @@ -622,10 +622,9 @@ static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i) > cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node), > priv->irq_info[i].mask); > > -#ifdef CONFIG_SMP > - if (irq_set_affinity_hint(irq, priv->irq_info[i].mask)) > + if (IS_ENABLED(CONFIG_SMP) && > + irq_set_affinity_hint(irq, priv->irq_info[i].mask)) > mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x", irq); > -#endif > > return 0; > } Acked-by: Saeed Mahameed <saeedm@mellanox.com> Thank you Arnd !! -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
From: Arnd Bergmann <arnd@arndb.de> Date: Mon, 29 May 2017 15:00:17 +0200 > Building the driver with CONFIG_SMP disabled results in a harmless > warning: > > ethernet/mellanox/mlx5/core/main.c: In function 'mlx5_irq_set_affinity_hint': > ethernet/mellanox/mlx5/core/main.c:615:6: error: unused variable 'irq' [-Werror=unused-variable] > > It's better to express the conditional compilation using IS_ENABLED() > here, as that lets the compiler see what the intented use for the variable > is, and that it can be silently discarded. > > Fixes: b665d98edc9a ("net/mlx5: Tolerate irq_set_affinity_hint() failures") > Signed-off-by: Arnd Bergmann <arnd@arndb.de> Applied, thank you. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 361cd112bb5b..9274d93d3183 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -622,10 +622,9 @@ static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i) cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node), priv->irq_info[i].mask); -#ifdef CONFIG_SMP - if (irq_set_affinity_hint(irq, priv->irq_info[i].mask)) + if (IS_ENABLED(CONFIG_SMP) && + irq_set_affinity_hint(irq, priv->irq_info[i].mask)) mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x", irq); -#endif return 0; }
Building the driver with CONFIG_SMP disabled results in a harmless warning: ethernet/mellanox/mlx5/core/main.c: In function 'mlx5_irq_set_affinity_hint': ethernet/mellanox/mlx5/core/main.c:615:6: error: unused variable 'irq' [-Werror=unused-variable] It's better to express the conditional compilation using IS_ENABLED() here, as that lets the compiler see what the intented use for the variable is, and that it can be silently discarded. Fixes: b665d98edc9a ("net/mlx5: Tolerate irq_set_affinity_hint() failures") igned-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/net/ethernet/mellanox/mlx5/core/main.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)