Subject: linux-next: build failure after merge of the net-next tree

From: Stephen Rothwell <[email-masked]>
Date: Mon, 1 Jun 2015 13:44:13 +1000

Hi all,

After merging the net-next tree, today's linux-next build (x86_64
allmodconfig) failed like this:

drivers/net/ethernet/mellanox/mlx5/core/main.c: In function 'mlx5_irq_set_affinity_hint':
drivers/net/ethernet/mellanox/mlx5/core/main.c:474:2: error: implicit declaration of function 'cpumask_set_cpu_local_first' [-Werror=implicit-function-declaration]
  err = cpumask_set_cpu_local_first(i, numa_node, priv->irq_info[i].mask);
  ^

Caused by commit db058a186f98 ("net/mlx5_core: Set irq affinity hints")
interacting with commit f36963c9d3f6 ("cpumask_set_cpu_local_first =>
cpumask_local_spread, lament") from Linus' tree.

I have applied the following merge fix patch (Dave, you could do this
by back merging commit f36963c9d3f6 from Linus' tree - which is based
on v4.1-rc2 if that worries you).  Please yell if this is not correct
(it does build).

From: Stephen Rothwell <[email-masked]>
Date: Mon, 1 Jun 2015 13:36:49 +1000
Subject: [PATCH] net/mlx5_core: merge fix for cpumask_set_cpu_local_first API change

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 1c37f587426d..2510fed3494d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -471,11 +471,8 @@ static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i)
 		return -ENOMEM;
 	}
 
-	err = cpumask_set_cpu_local_first(i, numa_node, priv->irq_info[i].mask);
-	if (err) {
-		mlx5_core_warn(mdev, "cpumask_set_cpu_local_first failed");
-		goto err_clear_mask;
-	}
+	cpumask_set_cpu(cpumask_local_spread(i, numa_node),
+			priv->irq_info[i].mask);
 
 	err = irq_set_affinity_hint(irq, priv->irq_info[i].mask);
 	if (err) {
-- 
2.1.4

-- 
Cheers,
Stephen Rothwell                    [email-masked]