infiniband: mlx5: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

1 files changed, 9 insertions, 42 deletions

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 6d763d6a189f..d78a94803e8c 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -606,52 +606,27 @@ static void mlx5_mr_cache_debugfs_cleanup(struct mlx5_ib_dev *dev)
 	dev->cache.root = NULL;
 }
 
-static int mlx5_mr_cache_debugfs_init(struct mlx5_ib_dev *dev)
+static void mlx5_mr_cache_debugfs_init(struct mlx5_ib_dev *dev)
 {
 	struct mlx5_mr_cache *cache = &dev->cache;
 	struct mlx5_cache_ent *ent;
+	struct dentry *dir;
 	int i;
 
 	if (!mlx5_debugfs_root || dev->rep)
-		return 0;
+		return;
 
 	cache->root = debugfs_create_dir("mr_cache", dev->mdev->priv.dbg_root);
-	if (!cache->root)
-		return -ENOMEM;
 
 	for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
 		ent = &cache->ent[i];
 		sprintf(ent->name, "%d", ent->order);
-		ent->dir = debugfs_create_dir(ent->name,  cache->root);
-		if (!ent->dir)
-			goto err;
-
-		ent->fsize = debugfs_create_file("size", 0600, ent->dir, ent,
-						 &size_fops);
-		if (!ent->fsize)
-			goto err;
-
-		ent->flimit = debugfs_create_file("limit", 0600, ent->dir, ent,
-						  &limit_fops);
-		if (!ent->flimit)
-			goto err;
-
-		ent->fcur = debugfs_create_u32("cur", 0400, ent->dir,
-					       &ent->cur);
-		if (!ent->fcur)
-			goto err;
-
-		ent->fmiss = debugfs_create_u32("miss", 0600, ent->dir,
-						&ent->miss);
-		if (!ent->fmiss)
-			goto err;
+		dir = debugfs_create_dir(ent->name, cache->root);
+		debugfs_create_file("size", 0600, dir, ent, &size_fops);
+		debugfs_create_file("limit", 0600, dir, ent, &limit_fops);
+		debugfs_create_u32("cur", 0400, dir, &ent->cur);
+		debugfs_create_u32("miss", 0600, dir, &ent->miss);
 	}
-
-	return 0;
-err:
-	mlx5_mr_cache_debugfs_cleanup(dev);
-
-	return -ENOMEM;
 }
 
 static void delay_time_func(struct timer_list *t)
@@ -665,7 +640,6 @@ int mlx5_mr_cache_init(struct mlx5_ib_dev *dev)
 {
 	struct mlx5_mr_cache *cache = &dev->cache;
 	struct mlx5_cache_ent *ent;
-	int err;
 	int i;
 
 	mutex_init(&dev->slow_path_mutex);
@@ -709,14 +683,7 @@ int mlx5_mr_cache_init(struct mlx5_ib_dev *dev)
 		queue_work(cache->wq, &ent->work);
 	}
 
-	err = mlx5_mr_cache_debugfs_init(dev);
-	if (err)
-		mlx5_ib_warn(dev, "cache debugfs failure\n");
-
-	/*
-	 * We don't want to fail driver if debugfs failed to initialize,
-	 * so we are not forwarding error to the user.
-	 */
+	mlx5_mr_cache_debugfs_init(dev);
 
 	return 0;
 }