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Instead of > using the devm_add_action_or_reset() the current driver is based on hand > crafted error goto paths and a .remove() callback. > > Convert the driver to devm_ APIs only by making use of > devm_add_action_or_reset() and devm_pm_runtime_enable() to simplify the > release and error path. Nit: I think keep this paragaph should be enough. > > Signed-off-by: Marco Felsch > --- > drivers/pmdomain/imx/imx93-blk-ctrl.c | 64 +++++++++++++++-------------------- > 1 file changed, 27 insertions(+), 37 deletions(-) > > diff --git a/drivers/pmdomain/imx/imx93-blk-ctrl.c b/drivers/pmdomain/imx/imx93-blk-ctrl.c > index 2aa163aef8de4ee901b9cde76ce2aad246c8c08a..13b0de6dd689cf944e034f7666a4e97b0118e3bd 100644 > --- a/drivers/pmdomain/imx/imx93-blk-ctrl.c > +++ b/drivers/pmdomain/imx/imx93-blk-ctrl.c > @@ -188,6 +188,20 @@ static int imx93_blk_ctrl_power_off(struct generic_pm_domain *genpd) > return 0; > } > ... > static struct lock_class_key blk_ctrl_genpd_lock_class; > > static int imx93_blk_ctrl_probe(struct platform_device *pdev) > @@ -256,10 +270,8 @@ static int imx93_blk_ctrl_probe(struct platform_device *pdev) > domain->clks[j].id = data->clk_names[j]; > > ret = devm_clk_bulk_get(dev, data->num_clks, domain->clks); > - if (ret) { > - dev_err_probe(dev, ret, "failed to get clock\n"); > - goto cleanup_pds; > - } > + if (ret) > + return dev_err_probe(dev, ret, "failed to get clock\n"); > > domain->genpd.name = data->name; > domain->genpd.power_on = imx93_blk_ctrl_power_on; > @@ -267,11 +279,12 @@ static int imx93_blk_ctrl_probe(struct platform_device *pdev) > domain->bc = bc; > > ret = pm_genpd_init(&domain->genpd, NULL, true); > - if (ret) { > - dev_err_probe(dev, ret, "failed to init power domain\n"); > - goto cleanup_pds; > - } > + if (ret) > + return dev_err_probe(dev, ret, "failed to init power domain\n"); > > + ret = devm_add_action_or_reset(dev, imx93_release_pm_genpd, &domain->genpd); > + if (ret) > + return dev_err_probe(dev, ret, "failed to add pm_genpd release callback\n"); > /* > * We use runtime PM to trigger power on/off of the upstream GPC > * domain, as a strict hierarchical parent/child power domain > @@ -288,39 +301,17 @@ static int imx93_blk_ctrl_probe(struct platform_device *pdev) > bc->onecell_data.domains[i] = &domain->genpd; > } > > - pm_runtime_enable(dev); > + devm_pm_runtime_enable(dev); Need check return value > > ret = of_genpd_add_provider_onecell(dev->of_node, &bc->onecell_data); > - if (ret) { > - dev_err_probe(dev, ret, "failed to add power domain provider\n"); > - goto cleanup_pds; > - } > + if (ret) > + return dev_err_probe(dev, ret, "failed to add power domain provider\n"); > > - dev_set_drvdata(dev, bc); why remove dev_set_drvdata(dev, bc) Frank > + ret = devm_add_action_or_reset(dev, imx93_release_genpd_provider, dev->of_node); > + if (ret) > + return dev_err_probe(dev, ret, "failed to add genpd_provider release callback\n"); > > return 0; > - > -cleanup_pds: > - for (i--; i >= 0; i--) > - pm_genpd_remove(&bc->domains[i].genpd); > - > - return ret; > -} > - > -static void imx93_blk_ctrl_remove(struct platform_device *pdev) > -{ > - struct imx93_blk_ctrl *bc = dev_get_drvdata(&pdev->dev); > - int i; > - > - of_genpd_del_provider(pdev->dev.of_node); > - > - pm_runtime_disable(&pdev->dev); > - > - for (i = 0; i < bc->onecell_data.num_domains; i++) { > - struct imx93_blk_ctrl_domain *domain = &bc->domains[i]; > - > - pm_genpd_remove(&domain->genpd); > - } > } > > static const struct imx93_blk_ctrl_domain_data imx93_media_blk_ctl_domain_data[] = { > @@ -455,7 +446,6 @@ MODULE_DEVICE_TABLE(of, imx93_blk_ctrl_of_match); > > static struct platform_driver imx93_blk_ctrl_driver = { > .probe = imx93_blk_ctrl_probe, > - .remove = imx93_blk_ctrl_remove, > .driver = { > .name = "imx93-blk-ctrl", > .of_match_table = imx93_blk_ctrl_of_match, > > -- > 2.47.3 >