diff options
| -rw-r--r-- | drivers/staging/lirc/lirc_zilog.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/staging/lirc/lirc_zilog.c b/drivers/staging/lirc/lirc_zilog.c index 39f7b53f0785..c857b99e5ace 100644 --- a/drivers/staging/lirc/lirc_zilog.c +++ b/drivers/staging/lirc/lirc_zilog.c @@ -94,7 +94,7 @@ struct IR { struct lirc_driver l; struct mutex ir_lock; - int open; + atomic_t open_count; struct i2c_adapter *adapter; struct IR_rx *rx; @@ -279,7 +279,7 @@ static int lirc_thread(void *arg) set_current_state(TASK_INTERRUPTIBLE); /* if device not opened, we can sleep half a second */ - if (!ir->open) { + if (atomic_read(&ir->open_count) == 0) { schedule_timeout(HZ/2); continue; } @@ -1094,10 +1094,7 @@ static int open(struct inode *node, struct file *filep) if (ir == NULL) return -ENODEV; - /* increment in use count */ - mutex_lock(&ir->ir_lock); - ++ir->open; - mutex_unlock(&ir->ir_lock); + atomic_inc(&ir->open_count); /* stash our IR struct */ filep->private_data = ir; @@ -1115,10 +1112,7 @@ static int close(struct inode *node, struct file *filep) return -ENODEV; } - /* decrement in use count */ - mutex_lock(&ir->ir_lock); - --ir->open; - mutex_unlock(&ir->ir_lock); + atomic_dec(&ir->open_count); return 0; } @@ -1294,6 +1288,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id) ir->adapter = adap; mutex_init(&ir->ir_lock); + atomic_set(&ir->open_count, 0); /* set lirc_dev stuff */ memcpy(&ir->l, &lirc_template, sizeof(struct lirc_driver)); |
