diff options
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/info.c | 12 | ||||
| -rw-r--r-- | sound/core/init.c | 18 | ||||
| -rw-r--r-- | sound/core/seq/seq_clientmgr.c | 6 |
3 files changed, 22 insertions, 14 deletions
diff --git a/sound/core/info.c b/sound/core/info.c index 96a074019c33..0eb169acc850 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -713,8 +713,11 @@ snd_info_create_entry(const char *name, struct snd_info_entry *parent, INIT_LIST_HEAD(&entry->list); entry->parent = parent; entry->module = module; - if (parent) + if (parent) { + mutex_lock(&parent->access); list_add_tail(&entry->list, &parent->children); + mutex_unlock(&parent->access); + } return entry; } @@ -792,7 +795,12 @@ void snd_info_free_entry(struct snd_info_entry * entry) list_for_each_entry_safe(p, n, &entry->children, list) snd_info_free_entry(p); - list_del(&entry->list); + p = entry->parent; + if (p) { + mutex_lock(&p->access); + list_del(&entry->list); + mutex_unlock(&p->access); + } kfree(entry->name); if (entry->private_free) entry->private_free(entry); diff --git a/sound/core/init.c b/sound/core/init.c index 0c4dc40376a7..079c12d64b0e 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -382,14 +382,7 @@ int snd_card_disconnect(struct snd_card *card) card->shutdown = 1; spin_unlock(&card->files_lock); - /* phase 1: disable fops (user space) operations for ALSA API */ - mutex_lock(&snd_card_mutex); - snd_cards[card->number] = NULL; - clear_bit(card->number, snd_cards_lock); - mutex_unlock(&snd_card_mutex); - - /* phase 2: replace file->f_op with special dummy operations */ - + /* replace file->f_op with special dummy operations */ spin_lock(&card->files_lock); list_for_each_entry(mfile, &card->files_list, list) { /* it's critical part, use endless loop */ @@ -405,7 +398,7 @@ int snd_card_disconnect(struct snd_card *card) } spin_unlock(&card->files_lock); - /* phase 3: notify all connected devices about disconnection */ + /* notify all connected devices about disconnection */ /* at this point, they cannot respond to any calls except release() */ #if IS_ENABLED(CONFIG_SND_MIXER_OSS) @@ -421,6 +414,13 @@ int snd_card_disconnect(struct snd_card *card) device_del(&card->card_dev); card->registered = false; } + + /* disable fops (user space) operations for ALSA API */ + mutex_lock(&snd_card_mutex); + snd_cards[card->number] = NULL; + clear_bit(card->number, snd_cards_lock); + mutex_unlock(&snd_card_mutex); + #ifdef CONFIG_PM wake_up(&card->power_sleep); #endif diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 7d4640d1fe9f..38e7deab6384 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -1252,7 +1252,7 @@ static int snd_seq_ioctl_set_client_info(struct snd_seq_client *client, /* fill the info fields */ if (client_info->name[0]) - strlcpy(client->name, client_info->name, sizeof(client->name)); + strscpy(client->name, client_info->name, sizeof(client->name)); client->filter = client_info->filter; client->event_lost = client_info->event_lost; @@ -1530,7 +1530,7 @@ static int snd_seq_ioctl_create_queue(struct snd_seq_client *client, void *arg) /* set queue name */ if (!info->name[0]) snprintf(info->name, sizeof(info->name), "Queue-%d", q->queue); - strlcpy(q->name, info->name, sizeof(q->name)); + strscpy(q->name, info->name, sizeof(q->name)); snd_use_lock_free(&q->use_lock); return 0; @@ -1592,7 +1592,7 @@ static int snd_seq_ioctl_set_queue_info(struct snd_seq_client *client, queuefree(q); return -EPERM; } - strlcpy(q->name, info->name, sizeof(q->name)); + strscpy(q->name, info->name, sizeof(q->name)); queuefree(q); return 0; |