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| author | Takashi Iwai | 2018-01-15 16:45:11 +0100 |
|---|---|---|
| committer | Takashi Iwai | 2018-01-15 16:45:15 +0100 |
| commit | 4ea5553a51e55664f86bed29e62e67ecb45bedd8 (patch) | |
| tree | ea63c963555b083858c581385ff5bfb24413caca /sound/core/seq | |
| parent | ALSA: usb-audio: Add a quirk for Nura's first gen headset (diff) | |
| parent | ALSA: seq: Make ioctls race-free (diff) | |
| download | kernel-qcow2-linux-4ea5553a51e55664f86bed29e62e67ecb45bedd8.tar.gz kernel-qcow2-linux-4ea5553a51e55664f86bed29e62e67ecb45bedd8.tar.xz kernel-qcow2-linux-4ea5553a51e55664f86bed29e62e67ecb45bedd8.zip | |
Merge branch 'for-linus' into for-next
Back-merge to the development branch for further fixes of sequencer
stuff.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/seq')
| -rw-r--r-- | sound/core/seq/seq_clientmgr.c | 3 | ||||
| -rw-r--r-- | sound/core/seq/seq_clientmgr.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 6e22eea72654..d01913404581 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -221,6 +221,7 @@ static struct snd_seq_client *seq_create_client1(int client_index, int poolsize) rwlock_init(&client->ports_lock); mutex_init(&client->ports_mutex); INIT_LIST_HEAD(&client->ports_list_head); + mutex_init(&client->ioctl_mutex); /* find free slot in the client table */ spin_lock_irqsave(&clients_lock, flags); @@ -2130,7 +2131,9 @@ static long snd_seq_ioctl(struct file *file, unsigned int cmd, return -EFAULT; } + mutex_lock(&client->ioctl_mutex); err = handler->func(client, &buf); + mutex_unlock(&client->ioctl_mutex); if (err >= 0) { /* Some commands includes a bug in 'dir' field. */ if (handler->cmd == SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT || diff --git a/sound/core/seq/seq_clientmgr.h b/sound/core/seq/seq_clientmgr.h index c6614254ef8a..0611e1e0ed5b 100644 --- a/sound/core/seq/seq_clientmgr.h +++ b/sound/core/seq/seq_clientmgr.h @@ -61,6 +61,7 @@ struct snd_seq_client { struct list_head ports_list_head; rwlock_t ports_lock; struct mutex ports_mutex; + struct mutex ioctl_mutex; int convert32; /* convert 32->64bit */ /* output pool */ |