diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-02-28 05:29:16 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-02-28 05:29:16 -0300 |
| commit | 844e3cded9c8665e95b1e43b707a6c3adcbc901f (patch) | |
| tree | dd9cccb325c949319a9de3e0cabad91d6261fa75 /sound/core/seq/seq_ports.c | |
| parent | 6d461a4fe7896faa1aec5a5417888cf179e46b9f (diff) | |
Linux-libre 4.4.3-gnu
Diffstat (limited to 'sound/core/seq/seq_ports.c')
| -rw-r--r-- | sound/core/seq/seq_ports.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c index 921fb2bd8..fe686ee41 100644 --- a/sound/core/seq/seq_ports.c +++ b/sound/core/seq/seq_ports.c @@ -535,19 +535,22 @@ static void delete_and_unsubscribe_port(struct snd_seq_client *client, bool is_src, bool ack) { struct snd_seq_port_subs_info *grp; + struct list_head *list; + bool empty; grp = is_src ? &port->c_src : &port->c_dest; + list = is_src ? &subs->src_list : &subs->dest_list; down_write(&grp->list_mutex); write_lock_irq(&grp->list_lock); - if (is_src) - list_del(&subs->src_list); - else - list_del(&subs->dest_list); + empty = list_empty(list); + if (!empty) + list_del_init(list); grp->exclusive = 0; write_unlock_irq(&grp->list_lock); up_write(&grp->list_mutex); - unsubscribe_port(client, port, grp, &subs->info, ack); + if (!empty) + unsubscribe_port(client, port, grp, &subs->info, ack); } /* connect two ports */ |