Messages in this thread Patch in this message | | | From | Benjamin Gaignard <> | Subject | [PATCH v3] soc: imx: imx8m-blk-ctrl: Defer probe if 'bus' genpd is not yet ready | Date | Mon, 19 Sep 2022 14:13:02 +0200 |
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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 <benjamin.gaignard@collabora.com> --- v3: - only return -EPROBE_DEFER if 'bus' device hasn't be found.
v2: - keep dev_err_probe only change the return value.
drivers/soc/imx/imx8m-blk-ctrl.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c index dff7529268e4..1c195e9e8895 100644 --- a/drivers/soc/imx/imx8m-blk-ctrl.c +++ b/drivers/soc/imx/imx8m-blk-ctrl.c @@ -214,9 +214,14 @@ 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]; -- 2.32.0
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