diff options
Diffstat (limited to 'drivers/media/video/v4l2-device.c')
| -rw-r--r-- | drivers/media/video/v4l2-device.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c index 94aa485ade52..0d06e7cbd5b3 100644 --- a/drivers/media/video/v4l2-device.c +++ b/drivers/media/video/v4l2-device.c @@ -49,6 +49,22 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev) } EXPORT_SYMBOL_GPL(v4l2_device_register); +int v4l2_device_set_name(struct v4l2_device *v4l2_dev, const char *basename, + atomic_t *instance) +{ + int num = atomic_inc_return(instance) - 1; + int len = strlen(basename); + + if (basename[len - 1] >= '0' && basename[len - 1] <= '9') + snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), + "%s-%d", basename, num); + else + snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), + "%s%d", basename, num); + return num; +} +EXPORT_SYMBOL_GPL(v4l2_device_set_name); + void v4l2_device_disconnect(struct v4l2_device *v4l2_dev) { if (v4l2_dev->dev) { @@ -67,8 +83,21 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev) v4l2_device_disconnect(v4l2_dev); /* Unregister subdevs */ - list_for_each_entry_safe(sd, next, &v4l2_dev->subdevs, list) + list_for_each_entry_safe(sd, next, &v4l2_dev->subdevs, list) { v4l2_device_unregister_subdev(sd); +#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE)) + if (sd->flags & V4L2_SUBDEV_FL_IS_I2C) { + struct i2c_client *client = v4l2_get_subdevdata(sd); + + /* We need to unregister the i2c client explicitly. + We cannot rely on i2c_del_adapter to always + unregister clients for us, since if the i2c bus + is a platform bus, then it is never deleted. */ + if (client) + i2c_unregister_device(client); + } +#endif + } } EXPORT_SYMBOL_GPL(v4l2_device_unregister); |