[PATCH net-next 1/2] sysfs: facilitate creating an empty directory

[Heiner Kallweit <hkallweit1@gmail.com>]

We have use cases where an empty sysfs directory is created.
This requires an attribute list consisting of only the sentinal entry.
It takes only to modify one check to enable creating an empty directory
with a NULL attribute list.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 fs/sysfs/group.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 4e1e4f18a16..031cb6f36b5 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -141,9 +141,10 @@ static int internal_create_group(struct kobject *kobj, int update,
 	if (unlikely(update && !kobj->sd))
 		return -EINVAL;
 
-	if (!grp->attrs && !grp->bin_attrs) {
-		pr_debug("sysfs: (bin_)attrs not set by subsystem for group: %s/%s, skipping\n",
-			 kobj->name, grp->name ?: "");
+	/* If name is set w/o attributes, create an empty directory */
+	if (!grp->name && !grp->attrs && !grp->bin_attrs) {
+		pr_debug("sysfs: (bin_)attrs not set by subsystem for group: %s, skipping\n",
+			 kobj->name);
 		return 0;
 	}
 
-- 
2.56.0