diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/firewire/tascam/tascam-hwdep.c | 33 |
1 files changed, 11 insertions, 22 deletions
diff --git a/sound/firewire/tascam/tascam-hwdep.c b/sound/firewire/tascam/tascam-hwdep.c index 131267c3a042..106406cbfaa3 100644 --- a/sound/firewire/tascam/tascam-hwdep.c +++ b/sound/firewire/tascam/tascam-hwdep.c @@ -16,31 +16,14 @@ #include "tascam.h" -static long hwdep_read_locked(struct snd_tscm *tscm, char __user *buf, - long count) -{ - union snd_firewire_event event; - - memset(&event, 0, sizeof(event)); - - event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS; - event.lock_status.status = (tscm->dev_lock_count > 0); - tscm->dev_lock_changed = false; - - count = min_t(long, count, sizeof(event.lock_status)); - - if (copy_to_user(buf, &event, count)) - return -EFAULT; - - return count; -} - static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, loff_t *offset) { struct snd_tscm *tscm = hwdep->private_data; DEFINE_WAIT(wait); - union snd_firewire_event event; + union snd_firewire_event event = { + .lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS, + }; spin_lock_irq(&tscm->lock); @@ -54,10 +37,16 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, spin_lock_irq(&tscm->lock); } - memset(&event, 0, sizeof(event)); - count = hwdep_read_locked(tscm, buf, count); + event.lock_status.status = (tscm->dev_lock_count > 0); + tscm->dev_lock_changed = false; + spin_unlock_irq(&tscm->lock); + count = min_t(long, count, sizeof(event.lock_status)); + + if (copy_to_user(buf, &event, count)) + return -EFAULT; + return count; } |