Patch "drm/mipi-dsi: Set the fwnode for mipi_dsi_device" has been added to the 5.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    drm/mipi-dsi: Set the fwnode for mipi_dsi_device

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-mipi-dsi-set-the-fwnode-for-mipi_dsi_device.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit a7ada865b95d1d14035a1fecb4e4bd656638a3da
Author: Saravana Kannan <saravanak@xxxxxxxxxx>
Date:   Thu Mar 9 22:39:09 2023 -0800

    drm/mipi-dsi: Set the fwnode for mipi_dsi_device
    
    [ Upstream commit a26cc2934331b57b5a7164bff344f0a2ec245fc0 ]
    
    After commit 3fb16866b51d ("driver core: fw_devlink: Make cycle
    detection more robust"), fw_devlink prints an error when consumer
    devices don't have their fwnode set. This used to be ignored silently.
    
    Set the fwnode mipi_dsi_device so fw_devlink can find them and properly
    track their dependencies.
    
    This fixes errors like this:
    [    0.334054] nwl-dsi 30a00000.mipi-dsi: Failed to create device link with regulator-lcd-1v8
    [    0.346964] nwl-dsi 30a00000.mipi-dsi: Failed to create device link with backlight-dsi
    
    Reported-by: Martin Kepplinger <martin.kepplinger@xxxxxxx>
    Link: https://lore.kernel.org/lkml/2a8e407f4f18c9350f8629a2b5fa18673355b2ae.camel@xxxxxxx/
    Fixes: 068a00233969 ("drm: Add MIPI DSI bus support")
    Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx>
    Tested-by: Martin Kepplinger <martin.kepplinger@xxxxxxx>
    Link: https://lore.kernel.org/r/20230310063910.2474472-1-saravanak@xxxxxxxxxx
    Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index b942c69e9b489..17a96f1d9234c 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -221,7 +221,7 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *host,
 		return dsi;
 	}
 
-	dsi->dev.of_node = info->node;
+	device_set_node(&dsi->dev, of_fwnode_handle(info->node));
 	dsi->channel = info->channel;
 	strlcpy(dsi->name, info->type, sizeof(dsi->name));