diff options
Diffstat (limited to 'drivers/media/cec/core/cec-core.c')
| -rw-r--r-- | drivers/media/cec/core/cec-core.c | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/drivers/media/cec/core/cec-core.c b/drivers/media/cec/core/cec-core.c index e0756826d629..48282d272fe6 100644 --- a/drivers/media/cec/core/cec-core.c +++ b/drivers/media/cec/core/cec-core.c @@ -51,35 +51,6 @@ static struct dentry *top_cec_dir; /* dev to cec_devnode */ #define to_cec_devnode(cd) container_of(cd, struct cec_devnode, dev) -int cec_get_device(struct cec_devnode *devnode) -{ - /* - * Check if the cec device is available. This needs to be done with - * the devnode->lock held to prevent an open/unregister race: - * without the lock, the device could be unregistered and freed between - * the devnode->registered check and get_device() calls, leading to - * a crash. - */ - mutex_lock(&devnode->lock); - /* - * return ENODEV if the cec device has been removed - * already or if it is not registered anymore. - */ - if (!devnode->registered) { - mutex_unlock(&devnode->lock); - return -ENODEV; - } - /* and increase the device refcount */ - get_device(&devnode->dev); - mutex_unlock(&devnode->lock); - return 0; -} - -void cec_put_device(struct cec_devnode *devnode) -{ - put_device(&devnode->dev); -} - /* Called when the last user of the cec device exits. */ static void cec_devnode_release(struct device *cd) { |