[PATCH v2] block: aoe: no need to check return value of debugfs_create functions

Greg Kroah-Hartman
2019-06-03T14:25:31Z

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.

Cc: "Ed L. Cashin" <ed.cashin@acm.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
v2: fix uninitialized entry issue found by Omar Sandoval

drivers/block/aoe/aoeblk.c | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index e2c6aae2d636..bd19f8af950b 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -196,7 +196,6 @@ static const struct file_operations aoe_debugfs_fops = {
static void
aoedisk_add_debugfs(struct aoedev *d)
{
- struct dentry *entry;
char *p;

if (aoe_debugfs_dir == NULL)
@@ -207,15 +206,8 @@ aoedisk_add_debugfs(struct aoedev *d)
else
p++;
BUG_ON(*p == '\0');
- entry = debugfs_create_file(p, 0444, aoe_debugfs_dir, d,
- &aoe_debugfs_fops);
- if (IS_ERR_OR_NULL(entry)) {
- pr_info("aoe: cannot create debugfs file for %s\n",
- d->gd->disk_name);
- return;
- }
- BUG_ON(d->debugfs);
- d->debugfs = entry;
+ d->debugfs = debugfs_create_file(p, 0444, aoe_debugfs_dir, d,
+ &aoe_debugfs_fops);
}
void
aoedisk_rm_debugfs(struct aoedev *d)
@@ -472,10 +464,6 @@ aoeblk_init(void)
if (buf_pool_cache == NULL)
return -ENOMEM;
aoe_debugfs_dir = debugfs_create_dir("aoe", NULL);
- if (IS_ERR_OR_NULL(aoe_debugfs_dir)) {
- pr_info("aoe: cannot create debugfs directory\n");
- aoe_debugfs_dir = NULL;
- }
return 0;
}

--
2.21.0