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drm/bridge: aux-hpd-bridge: fix assignment of the of_node

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[ Upstream commit e8537cad824065b0425fb0429e762e14a08067c2 ]

Perform fix similar to the one in the commit 85e444a681 ("drm/bridge:
Fix assignment of the of_node of the parent to aux bridge").

The assignment of the of_node to the aux HPD bridge needs to mark the
of_node as reused, otherwise driver core will attempt to bind resources
like pinctrl, which is going to fail as corresponding pins are already
marked as used by the parent device.
Fix that by using the device_set_of_node_from_dev() helper instead of
assigning it directly.

Fixes: e560518a6c ("drm/bridge: implement generic DP HPD bridge")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250608-fix-aud-hpd-bridge-v1-1-4641a6f8e381@oss.qualcomm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Baryshkov
2025-06-08 18:52:04 +03:00
committed by Greg Kroah-Hartman
parent 800a6bde38
commit 6a5348dbd7
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/bridge/aux-hpd-bridge.c
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@@ -64,10 +64,11 @@ struct auxiliary_device *devm_drm_dp_hpd_bridge_alloc(struct device *parent, str
adev->id = ret;
adev->name = "dp_hpd_bridge";
adev->dev.parent = parent;
adev->dev.of_node = of_node_get(parent->of_node);
adev->dev.release = drm_aux_hpd_bridge_release;
adev->dev.platform_data = of_node_get(np);
device_set_of_node_from_dev(&adev->dev, parent);
ret = auxiliary_device_init(adev);
if (ret) {
of_node_put(adev->dev.platform_data);