net/mlx5: avoid build warning for uniprocessor
authorArnd Bergmann <arnd@arndb.de>
Mon, 29 May 2017 13:00:17 +0000 (15:00 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 30 May 2017 18:09:28 +0000 (14:09 -0400)
commitf0d7ae95fff4ab444b8433f07afc4b077ef1a285
treeb01f86b36d2059f08b0ae207aa0fc31c0653eb34
parent59b2c3140f329e5817197f84860f3fa61a742fdf
net/mlx5: avoid build warning for uniprocessor

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>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlx5/core/main.c