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authorTakashi Iwai <tiwai@suse.de>2019-05-06 15:07:50 +0200
committerTakashi Iwai <tiwai@suse.de>2019-05-06 15:07:57 +0200
commit17b89c80319c2a66d33142112e06bf15893e6ecb (patch)
tree443ece3125ff837129735a2e0b579f61bb56a5bc /sound/core
parent78ff2afc26251741bcdf5668990bb6278e68adcd (diff)
parent3887c26c0e24d50a4d0ce20cf4726737cee1a2fd (diff)
downloadlinux-17b89c80319c2a66d33142112e06bf15893e6ecb.tar.bz2
Merge branch 'for-linus' into for-next
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/info.c12
-rw-r--r--sound/core/init.c18
2 files changed, 19 insertions, 11 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 356d41e4f3a4..d64416f0a281 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -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