[PATCH 1/3] drm: display: Set fwnode for aux bus devices

Saravana Kannan
2024-10-24T06:15:33Z

fwnode needs to be set for a device for fw_devlink to be able to
track/enforce its dependencies correctly. Without this, you'll see error
messages like this when the supplier has probed and tries to make sure
all its fwnode consumers are linked to it using device links:

mediatek-drm-dp 1c500000.edp-tx: Failed to create device link (0x180) with backlight-lcd0

Reported-by: "Nícolas F. R. A. Prado" <nfraprado@collabora.com>
Closes: https://lore.kernel.org/all/7b995947-4540-4b17-872e-e107adca4598@notapiano/
Tested-by: "Nícolas F. R. A. Prado" <nfraprado@collabora.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
---
drivers/gpu/drm/display/drm_dp_aux_bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/display/drm_dp_aux_bus.c b/drivers/gpu/drm/display/drm_dp_aux_bus.c
index d810529ebfb6..ec7eac6b595f 100644
--- a/drivers/gpu/drm/display/drm_dp_aux_bus.c
+++ b/drivers/gpu/drm/display/drm_dp_aux_bus.c
@@ -292,7 +292,7 @@ int of_dp_aux_populate_bus(struct drm_dp_aux *aux,
aux_ep->dev.parent = aux->dev;
aux_ep->dev.bus = &dp_aux_bus_type;
aux_ep->dev.type = &dp_aux_device_type_type;
- aux_ep->dev.of_node = of_node_get(np);
+ device_set_node(&aux_ep->dev, of_fwnode_handle(of_node_get(np)));
dev_set_name(&aux_ep->dev, "aux-%s", dev_name(aux->dev));

ret = device_register(&aux_ep->dev);
--
2.47.0.105.g07ac214952-goog