xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'for-linus' into for-next

Browse Source 
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2019-05-06 15:07:50 +02:00
parent 78ff2afc26 3887c26c0e
commit 17b89c8031
6 changed files with 103 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
sound/core/info.c
View File

@@ -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);

18
sound/core/init.c
View File

@@ -401,14 +401,7 @@ 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 */
@@ -424,7 +417,7 @@ 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)
@@ -440,6 +433,13 @@ 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