| Message ID | 20200324202844.1518292-4-jacopo@jmondi.org |
|---|---|
| State | New |
| Headers | show |
| Series | [1/4] Documentation: media: Document read-only subdevice | expand |
diff --git a/drivers/media/platform/bcm2835/bcm2835-unicam.c b/drivers/media/platform/bcm2835/bcm2835-unicam.c index 89bd1c842d38..5001976dcebc 100644 --- a/drivers/media/platform/bcm2835/bcm2835-unicam.c +++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c @@ -2875,7 +2875,7 @@ static int unicam_probe_complete(struct unicam_device *unicam) goto unregister; } - ret = v4l2_device_register_subdev_nodes(&unicam->v4l2_dev); + ret = v4l2_device_register_ro_subdev_nodes(&unicam->v4l2_dev); if (ret) { unicam_err(unicam, "Unable to register subdev nodes.\n"); goto unregister;
The bcm2835 bridge drivers controls the camera sensor configuration through direct calls to the kapi realized by the v4l2 sub-device operations and does not allow userspace to change the sensor parameter through the sub-device devnode. In order to expose to userspace the current sensor configuration, register the device node in read-only mode by using the newly introduced v4l2_device_register_subdev_ro_nodes() function. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> --- drivers/media/platform/bcm2835/bcm2835-unicam.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)