6.11-stable review patch. If anyone has any objections, please let me know.
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From: Abel Vesa abel.vesa@linaro.org
commit 85e444a68126a631221ae32c63fce882bb18a262 upstream.
The assignment of the of_node to the aux bridge needs to mark the of_node as reused as well, otherwise resource providers like pinctrl will report a gpio as already requested by a different device when both pinconf and gpios property are present. Fix that by using the device_set_of_node_from_dev() helper instead.
Fixes: 6914968a0b52 ("drm/bridge: properly refcount DT nodes in aux bridge drivers") Cc: stable@vger.kernel.org # 6.8 Cc: Dmitry Baryshkov dmitry.baryshkov@linaro.org Signed-off-by: Abel Vesa abel.vesa@linaro.org Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Reviewed-by: Neil Armstrong neil.armstrong@linaro.org Link: https://lore.kernel.org/r/20241018-drm-aux-bridge-mark-of-node-reused-v2-1-a... Signed-off-by: Neil Armstrong neil.armstrong@linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20241018-drm-aux-bridge-mark-o... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/bridge/aux-bridge.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/bridge/aux-bridge.c +++ b/drivers/gpu/drm/bridge/aux-bridge.c @@ -58,9 +58,10 @@ int drm_aux_bridge_register(struct devic adev->id = ret; adev->name = "aux_bridge"; adev->dev.parent = parent; - adev->dev.of_node = of_node_get(parent->of_node); adev->dev.release = drm_aux_bridge_release;
+ device_set_of_node_from_dev(&adev->dev, parent); + ret = auxiliary_device_init(adev); if (ret) { ida_free(&drm_aux_bridge_ida, adev->id);