From d3f785d74b3d066b17da57d25290b41471b4ebeb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 25 Sep 2023 11:55:23 +0200 Subject: [PATCH 1/2] soc/tegra: cbb: tegra194-cbb: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Signed-off-by: Thierry Reding --- drivers/soc/tegra/cbb/tegra194-cbb.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/soc/tegra/cbb/tegra194-cbb.c b/drivers/soc/tegra/cbb/tegra194-cbb.c index cf6886f362d3..9cbc562ae7d3 100644 --- a/drivers/soc/tegra/cbb/tegra194-cbb.c +++ b/drivers/soc/tegra/cbb/tegra194-cbb.c @@ -2293,7 +2293,7 @@ static int tegra194_cbb_probe(struct platform_device *pdev) return tegra_cbb_register(&cbb->base); } -static int tegra194_cbb_remove(struct platform_device *pdev) +static void tegra194_cbb_remove(struct platform_device *pdev) { struct tegra194_cbb *cbb = platform_get_drvdata(pdev); struct tegra_cbb *noc, *tmp; @@ -2311,8 +2311,6 @@ static int tegra194_cbb_remove(struct platform_device *pdev) } spin_unlock_irqrestore(&cbb_lock, flags); - - return 0; } static int __maybe_unused tegra194_cbb_resume_noirq(struct device *dev) @@ -2332,7 +2330,7 @@ static const struct dev_pm_ops tegra194_cbb_pm = { static struct platform_driver tegra194_cbb_driver = { .probe = tegra194_cbb_probe, - .remove = tegra194_cbb_remove, + .remove_new = tegra194_cbb_remove, .driver = { .name = "tegra194-cbb", .of_match_table = of_match_ptr(tegra194_cbb_match), From cda263907a6f88c75fb97cf7adecffaafb6237ec Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Thu, 12 Oct 2023 17:35:36 +0200 Subject: [PATCH 2/2] soc/tegra: pmc: Drop the ->opp_to_performance_state() callback Since commit 7c41cdcd3bbe ("OPP: Simplify the over-designed pstate <-> level dance"), there is no longer any need for genpd providers to assign the ->opp_to_performance_state(), hence let's drop it. Cc: Thierry Reding Cc: Jonathan Hunter Cc: linux-tegra@vger.kernel.org Signed-off-by: Ulf Hansson Signed-off-by: Thierry Reding --- drivers/soc/tegra/pmc.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 162f52456f65..f432aa022ace 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -1393,13 +1393,6 @@ tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd, return 0; } -static unsigned int -tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd, - struct dev_pm_opp *opp) -{ - return dev_pm_opp_get_level(opp); -} - static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np) { struct generic_pm_domain *genpd; @@ -1412,7 +1405,6 @@ static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np) genpd->name = "core"; genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state; - genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state; err = devm_pm_opp_set_regulators(pmc->dev, rname); if (err)