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| author | Jan Kara <jack@suse.cz> | 2017-03-23 01:37:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-14 20:04:25 +0100 |
| commit | 475c1471f11a455a5332879cb28a3ae03d353598 (patch) | |
| tree | c4d9e99bf4305afab87b1a9489bc13bb0c94da9b /lib | |
| parent | 753a4bcdbe536620ecfc66e8ba7f59389edc6304 (diff) | |
| download | linux-stable-475c1471f11a455a5332879cb28a3ae03d353598.tar.gz linux-stable-475c1471f11a455a5332879cb28a3ae03d353598.tar.bz2 linux-stable-475c1471f11a455a5332879cb28a3ae03d353598.zip | |
kobject: Export kobject_get_unless_zero()
commit c70c176ff8c3ff0ac6ef9a831cd591ea9a66bd1a upstream.
Make the function available for outside use and fortify it against NULL
kobject.
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/kobject.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/kobject.c b/lib/kobject.c index f58c7f2b229c..bbbb067de8ec 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -599,12 +599,15 @@ struct kobject *kobject_get(struct kobject *kobj) } EXPORT_SYMBOL(kobject_get); -static struct kobject * __must_check kobject_get_unless_zero(struct kobject *kobj) +struct kobject * __must_check kobject_get_unless_zero(struct kobject *kobj) { + if (!kobj) + return NULL; if (!kref_get_unless_zero(&kobj->kref)) kobj = NULL; return kobj; } +EXPORT_SYMBOL(kobject_get_unless_zero); /* * kobject_cleanup - free kobject resources. |