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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>
This commit is contained in:
Greg Kroah-Hartman 2019-01-22 16:17:57 +01:00 committed by Jason Gunthorpe
parent 0d0336cf54
commit 73eb8f03f0
4 changed files with 19 additions and 64 deletions
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15
drivers/infiniband/hw/mlx5/cong.c
View File

@ -389,19 +389,19 @@ void mlx5_ib_cleanup_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num)
dev->port[port_num].dbg_cc_params = NULL;
}
int mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num)
void mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num)
{
struct mlx5_ib_dbg_cc_params *dbg_cc_params;
struct mlx5_core_dev *mdev;
int i;
if (!mlx5_debugfs_root)
goto out;
return;
/* Takes a 1-based port number */
mdev = mlx5_ib_get_native_port_mdev(dev, port_num + 1, NULL);
if (!mdev)
goto out;
return;
if (!MLX5_CAP_GEN(mdev, cc_query_allowed) ||
!MLX5_CAP_GEN(mdev, cc_modify_allowed))
@ -415,8 +415,6 @@ int mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num)
dbg_cc_params->root = debugfs_create_dir("cc_params",
mdev->priv.dbg_root);
if (!dbg_cc_params->root)
goto err;
for (i = 0; i < MLX5_IB_DBG_CC_MAX; i++) {
dbg_cc_params->params[i].offset = i;
@ -427,14 +425,11 @@ int mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num)
0600, dbg_cc_params->root,
&dbg_cc_params->params[i],
&dbg_cc_fops);
if (!dbg_cc_params->params[i].dentry)
goto err;
}
put_mdev:
mlx5_ib_put_native_port_mdev(dev, port_num + 1);
out:
return 0;
return;
err:
mlx5_ib_warn(dev, "cong debugfs failure\n");
@ -445,5 +440,5 @@ err:
* We don't want to fail driver if debugfs failed to initialize,
* so we are not forwarding error to the user.
*/
return 0;
return;
}

9
drivers/infiniband/hw/mlx5/main.c
View File

@ -5530,9 +5530,7 @@ static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev,
mpi->mdev_events.notifier_call = mlx5_ib_event_slave_port;
mlx5_notifier_register(mpi->mdev, &mpi->mdev_events);
err = mlx5_ib_init_cong_debugfs(ibdev, port_num);
if (err)
goto unbind;
mlx5_ib_init_cong_debugfs(ibdev, port_num);
return true;
@ -6207,8 +6205,9 @@ void mlx5_ib_stage_counters_cleanup(struct mlx5_ib_dev *dev)
static int mlx5_ib_stage_cong_debugfs_init(struct mlx5_ib_dev *dev)
{
return mlx5_ib_init_cong_debugfs(dev,
mlx5_core_native_port_num(dev->mdev) - 1);
mlx5_ib_init_cong_debugfs(dev,
mlx5_core_native_port_num(dev->mdev) - 1);
return 0;
}
static void mlx5_ib_stage_cong_debugfs_cleanup(struct mlx5_ib_dev *dev)

8
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -636,7 +636,6 @@ struct mlx5_cache_ent {
spinlock_t lock;
struct dentry *dir;
char name[4];
u32 order;
u32 xlt;
@ -648,11 +647,6 @@ struct mlx5_cache_ent {
u32 miss;
u32 limit;
struct dentry *fsize;
struct dentry *fcur;
struct dentry *fmiss;
struct dentry *flimit;
struct mlx5_ib_dev *dev;
struct work_struct work;
struct delayed_work dwork;
@ -1270,7 +1264,7 @@ __be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev,
const struct ib_gid_attr *attr);
void mlx5_ib_cleanup_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);
int mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);
void mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);
/* GSI QP helper functions */
struct ib_qp *mlx5_ib_gsi_create_qp(struct ib_pd *pd,

51
drivers/infiniband/hw/mlx5/mr.c
View File

@ -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;
}