diff options
| -rw-r--r-- | drivers/media/rc/ir-lirc-codec.c | 59 | ||||
| -rw-r--r-- | drivers/media/rc/lirc_dev.c | 68 | ||||
| -rw-r--r-- | include/media/lirc_dev.h | 11 | ||||
| -rw-r--r-- | include/media/rc-core.h | 2 |
4 files changed, 62 insertions, 78 deletions
diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c index ff74a5d7a0f3..1e921e4f8839 100644 --- a/drivers/media/rc/ir-lirc-codec.c +++ b/drivers/media/rc/ir-lirc-codec.c @@ -88,6 +88,61 @@ void ir_lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev) wake_up_poll(&dev->wait_poll, POLLIN | POLLRDNORM); } +static int ir_lirc_open(struct inode *inode, struct file *file) +{ + struct lirc_dev *d = container_of(inode->i_cdev, struct lirc_dev, cdev); + struct rc_dev *dev = d->rdev; + int retval; + + retval = rc_open(dev); + if (retval) + return retval; + + retval = mutex_lock_interruptible(&dev->lock); + if (retval) + goto out_rc; + + if (!dev->registered) { + retval = -ENODEV; + goto out_unlock; + } + + if (dev->lirc_open) { + retval = -EBUSY; + goto out_unlock; + } + + if (dev->driver_type == RC_DRIVER_IR_RAW) + kfifo_reset_out(&dev->rawir); + + dev->lirc_open++; + file->private_data = dev; + + nonseekable_open(inode, file); + mutex_unlock(&dev->lock); + + return 0; + +out_unlock: + mutex_unlock(&dev->lock); +out_rc: + rc_close(dev); + return retval; +} + +static int ir_lirc_close(struct inode *inode, struct file *file) +{ + struct rc_dev *dev = file->private_data; + + mutex_lock(&dev->lock); + dev->lirc_open--; + mutex_unlock(&dev->lock); + + rc_close(dev); + + return 0; +} + static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf, size_t n, loff_t *ppos) { @@ -477,8 +532,8 @@ static const struct file_operations lirc_fops = { #endif .read = ir_lirc_read, .poll = ir_lirc_poll, - .open = lirc_dev_fop_open, - .release = lirc_dev_fop_close, + .open = ir_lirc_open, + .release = ir_lirc_close, .llseek = no_llseek, }; diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c index 22171267aa90..32124fb5c88e 100644 --- a/drivers/media/rc/lirc_dev.c +++ b/drivers/media/rc/lirc_dev.c @@ -61,7 +61,6 @@ lirc_allocate_device(void) d = kzalloc(sizeof(*d), GFP_KERNEL); if (d) { - mutex_init(&d->mutex); device_initialize(&d->dev); d->dev.class = lirc_class; d->dev.release = lirc_release_device; @@ -150,15 +149,15 @@ void lirc_unregister_device(struct lirc_dev *d) dev_dbg(&d->dev, "lirc_dev: driver %s unregistered from minor = %d\n", d->name, d->minor); - mutex_lock(&d->mutex); + mutex_lock(&rcdev->lock); - if (d->open) { + if (rcdev->lirc_open) { dev_dbg(&d->dev, LOGHEAD "releasing opened driver\n", d->name, d->minor); wake_up_poll(&rcdev->wait_poll, POLLHUP); } - mutex_unlock(&d->mutex); + mutex_unlock(&rcdev->lock); cdev_device_del(&d->cdev, &d->dev); ida_simple_remove(&lirc_ida, d->minor); @@ -166,67 +165,6 @@ void lirc_unregister_device(struct lirc_dev *d) } EXPORT_SYMBOL(lirc_unregister_device); -int lirc_dev_fop_open(struct inode *inode, struct file *file) -{ - struct lirc_dev *d = container_of(inode->i_cdev, struct lirc_dev, cdev); - struct rc_dev *rcdev = d->rdev; - int retval; - - dev_dbg(&d->dev, LOGHEAD "open called\n", d->name, d->minor); - - retval = mutex_lock_interruptible(&d->mutex); - if (retval) - return retval; - - if (!rcdev->registered) { - retval = -ENODEV; - goto out; - } - - if (d->open) { - retval = -EBUSY; - goto out; - } - - if (d->rdev) { - retval = rc_open(d->rdev); - if (retval) - goto out; - } - - if (rcdev->driver_type == RC_DRIVER_IR_RAW) - kfifo_reset_out(&rcdev->rawir); - - d->open++; - - file->private_data = d->rdev; - nonseekable_open(inode, file); - mutex_unlock(&d->mutex); - - return 0; - -out: - mutex_unlock(&d->mutex); - return retval; -} -EXPORT_SYMBOL(lirc_dev_fop_open); - -int lirc_dev_fop_close(struct inode *inode, struct file *file) -{ - struct rc_dev *rcdev = file->private_data; - struct lirc_dev *d = rcdev->lirc_dev; - - mutex_lock(&d->mutex); - - rc_close(rcdev); - d->open--; - - mutex_unlock(&d->mutex); - - return 0; -} -EXPORT_SYMBOL(lirc_dev_fop_close); - int __init lirc_dev_init(void) { int retval; diff --git a/include/media/lirc_dev.h b/include/media/lirc_dev.h index 5782add67edd..b45af81b4633 100644 --- a/include/media/lirc_dev.h +++ b/include/media/lirc_dev.h @@ -26,8 +26,6 @@ * @rdev: &struct rc_dev associated with the device * @fops: &struct file_operations for the device * @owner: the module owning this struct - * @open: open count for the device's chardev - * @mutex: serialises file_operations calls * @dev: &struct device assigned to the device * @cdev: &struct cdev assigned to the device */ @@ -39,10 +37,6 @@ struct lirc_dev { const struct file_operations *fops; struct module *owner; - int open; - - struct mutex mutex; /* protect from simultaneous accesses */ - struct device dev; struct cdev cdev; }; @@ -55,9 +49,4 @@ int lirc_register_device(struct lirc_dev *d); void lirc_unregister_device(struct lirc_dev *d); -/* default file operations - * used by drivers if they override only some operations - */ -int lirc_dev_fop_open(struct inode *inode, struct file *file); -int lirc_dev_fop_close(struct inode *inode, struct file *file); #endif diff --git a/include/media/rc-core.h b/include/media/rc-core.h index b6d719734744..4f585bff1347 100644 --- a/include/media/rc-core.h +++ b/include/media/rc-core.h @@ -117,6 +117,7 @@ enum rc_filter_type { * @rx_resolution : resolution (in ns) of input sampler * @tx_resolution: resolution (in ns) of output sampler * @lirc_dev: lirc char device + * @lirc_open: count of the number of times the device has been opened * @carrier_low: when setting the carrier range, first the low end must be * set with an ioctl and then the high end with another ioctl * @gap_start: time when gap starts @@ -190,6 +191,7 @@ struct rc_dev { u32 tx_resolution; #ifdef CONFIG_LIRC struct lirc_dev *lirc_dev; + int lirc_open; int carrier_low; ktime_t gap_start; u64 gap_duration; |