linux-kernel - [PATCH] drm/mipi: set fwnode when a mipi_dsi

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Date:   Sat, 10 Jul 2021 06:45:11 +0000
From:   Will McVicker <willmcvicker@...gle.com>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Will McVicker <willmcvicker@...gle.com>,
        Saravana Kannan <saravanak@...gle.com>, kernel-team@...roid.com
Subject: [PATCH] drm/mipi: set fwnode when a mipi_dsi_device registers itself

This is needed for fw_devlink to work properly with MIPI DSI devices.
Without setting the device's fwnode, the sync state framework isn't able
to properly track device links between the MIPI DSI device and its
suppliers which may result in its supplier probing before the mipi
device.

Suggested-by: Saravana Kannan <saravanak@...gle.com>
Signed-off-by: Will McVicker <willmcvicker@...gle.com>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 5dd475e82995..469d56cf2a50 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -222,6 +222,7 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *host,
 	}
 
 	dsi->dev.of_node = info->node;
+	dsi->dev.fwnode = of_fwnode_handle(info->node);
 	dsi->channel = info->channel;
 	strlcpy(dsi->name, info->type, sizeof(dsi->name));
 
-- 
2.32.0.93.g670b81a890-goog