Neither the GPIO nor the SWENTITY entities form part of the device
pipeline. We just create them to hold emulated uvc controls.
When the device initializes, a warning is thrown by the v4l2 core:
uvcvideo 1-1:1.0: Entity type for entity SWENTITY was not initialized!
There are no entity function that matches what we are doing here, and
it does not make to much sense to create a function for entities that
do not really exist.
Do not create MC entities for them and pretend nothing happened here.
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
---
drivers/media/usb/uvc/uvc_entity.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c
index d1a652ef35ec34801bd39a5124b834edf838a79e..2dbeb4ab0c4c8cc763ff2dcd2d836a50f3c6a040 100644
--- a/drivers/media/usb/uvc/uvc_entity.c
+++ b/drivers/media/usb/uvc/uvc_entity.c
@@ -72,6 +72,16 @@ static int uvc_mc_init_entity(struct uvc_video_chain *chain,
{
int ret;
+ /*
+ * Do not initialize virtual entities, they do not really exist
+ * and are not connected to any other entities.
+ */
+ switch (UVC_ENTITY_TYPE(entity)) {
+ case UVC_EXT_GPIO_UNIT:
+ case UVC_SWENTITY_UNIT:
+ return 0;
+ }
+
if (UVC_ENTITY_TYPE(entity) != UVC_TT_STREAMING) {
u32 function;
--
2.50.0.rc0.642.g800a2b2222-goog
