diff options
Diffstat (limited to 'drivers/media/rc/rc-ir-raw.c')
| -rw-r--r-- | drivers/media/rc/rc-ir-raw.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/drivers/media/rc/rc-ir-raw.c b/drivers/media/rc/rc-ir-raw.c index a2fc1a1d58b0..b6d256f03847 100644 --- a/drivers/media/rc/rc-ir-raw.c +++ b/drivers/media/rc/rc-ir-raw.c @@ -486,15 +486,18 @@ EXPORT_SYMBOL(ir_raw_encode_scancode); /* * Used to (un)register raw event clients */ -int ir_raw_event_register(struct rc_dev *dev) +int ir_raw_event_prepare(struct rc_dev *dev) { - int rc; - struct ir_raw_handler *handler; - struct task_struct *thread; + static bool raw_init; /* 'false' default value, raw decoders loaded? */ if (!dev) return -EINVAL; + if (!raw_init) { + request_module("ir-lirc-codec"); + raw_init = true; + } + dev->raw = kzalloc(sizeof(*dev->raw), GFP_KERNEL); if (!dev->raw) return -ENOMEM; @@ -503,6 +506,14 @@ int ir_raw_event_register(struct rc_dev *dev) dev->change_protocol = change_protocol; INIT_KFIFO(dev->raw->kfifo); + return 0; +} + +int ir_raw_event_register(struct rc_dev *dev) +{ + struct ir_raw_handler *handler; + struct task_struct *thread; + /* * raw transmitters do not need any event registration * because the event is coming from userspace @@ -511,10 +522,8 @@ int ir_raw_event_register(struct rc_dev *dev) thread = kthread_run(ir_raw_event_thread, dev->raw, "rc%u", dev->minor); - if (IS_ERR(thread)) { - rc = PTR_ERR(thread); - goto out; - } + if (IS_ERR(thread)) + return PTR_ERR(thread); dev->raw->thread = thread; } @@ -527,11 +536,15 @@ int ir_raw_event_register(struct rc_dev *dev) mutex_unlock(&ir_raw_handler_lock); return 0; +} + +void ir_raw_event_free(struct rc_dev *dev) +{ + if (!dev) + return; -out: kfree(dev->raw); dev->raw = NULL; - return rc; } void ir_raw_event_unregister(struct rc_dev *dev) @@ -550,8 +563,7 @@ void ir_raw_event_unregister(struct rc_dev *dev) handler->raw_unregister(dev); mutex_unlock(&ir_raw_handler_lock); - kfree(dev->raw); - dev->raw = NULL; + ir_raw_event_free(dev); } /* |