From 1a1da28544fd869824d2ffe1b7b2b03689d69dc1 Mon Sep 17 00:00:00 2001 From: Benjamin Gaignard Date: Mon, 19 Sep 2022 14:13:02 +0200 Subject: soc: imx: imx8m-blk-ctrl: Defer probe if 'bus' genpd is not yet ready Depending of the boot sequence 'bus' genpd could be probed after imx8m-blk-ctrl which led driver probe to fail. Change the returned error to allow to defer the probe in this case. Signed-off-by: Benjamin Gaignard Reviewed-by: Peng Fan Signed-off-by: Shawn Guo --- drivers/soc/imx/imx8m-blk-ctrl.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'drivers/soc/imx') diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c index 00879615a701..ddcf6be3d8b4 100644 --- a/drivers/soc/imx/imx8m-blk-ctrl.c +++ b/drivers/soc/imx/imx8m-blk-ctrl.c @@ -210,9 +210,14 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev) return -ENOMEM; bc->bus_power_dev = genpd_dev_pm_attach_by_name(dev, "bus"); - if (IS_ERR(bc->bus_power_dev)) - return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev), - "failed to attach power domain \"bus\"\n"); + if (IS_ERR(bc->bus_power_dev)) { + if (PTR_ERR(bc->bus_power_dev) == -ENODEV) + return dev_err_probe(dev, -EPROBE_DEFER, + "failed to attach power domain \"bus\"\n"); + else + return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev), + "failed to attach power domain \"bus\"\n"); + } for (i = 0; i < bc_data->num_domains; i++) { const struct imx8m_blk_ctrl_domain_data *data = &bc_data->domains[i]; -- cgit v1.2.3