From 4fbd8b788258bb636b007f5baf440262cbff1a00 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 4 Dec 2023 10:47:40 +0100 Subject: PCI: exynos: 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(). In the error path emit an error message replacing the (less useful) message by the core. Apart from the improved error message there is no change in behaviour. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Link: https://lore.kernel.org/linux-pci/50de44ea8931465fd9cdc821854ea761cb43adf6.1701682617.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König Signed-off-by: Krzysztof Wilczyński --- drivers/pci/controller/dwc/pci-exynos.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c index c6bede346932..104397ba45bd 100644 --- a/drivers/pci/controller/dwc/pci-exynos.c +++ b/drivers/pci/controller/dwc/pci-exynos.c @@ -375,7 +375,7 @@ fail_probe: return ret; } -static int exynos_pcie_remove(struct platform_device *pdev) +static void exynos_pcie_remove(struct platform_device *pdev) { struct exynos_pcie *ep = platform_get_drvdata(pdev); @@ -385,8 +385,6 @@ static int exynos_pcie_remove(struct platform_device *pdev) phy_exit(ep->phy); exynos_pcie_deinit_clk_resources(ep); regulator_bulk_disable(ARRAY_SIZE(ep->supplies), ep->supplies); - - return 0; } static int exynos_pcie_suspend_noirq(struct device *dev) @@ -431,7 +429,7 @@ static const struct of_device_id exynos_pcie_of_match[] = { static struct platform_driver exynos_pcie_driver = { .probe = exynos_pcie_probe, - .remove = exynos_pcie_remove, + .remove_new = exynos_pcie_remove, .driver = { .name = "exynos-pcie", .of_match_table = exynos_pcie_of_match, -- cgit From 93d61d3aa996ede34226055a2525c0c2e28258db Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 4 Dec 2023 10:47:41 +0100 Subject: PCI: keystone: 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(). In the error path emit an error message replacing the (less useful) message by the core. Apart from the improved error message there is no change in behaviour. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Link: https://lore.kernel.org/linux-pci/06612aff79dfb52d5b0b20129dff5e4b1f04d3a7.1701682617.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König Signed-off-by: Krzysztof Wilczyński --- drivers/pci/controller/dwc/pci-keystone.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 0def919f89fa..41c7ff862732 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -1302,7 +1302,7 @@ err_link: return ret; } -static int ks_pcie_remove(struct platform_device *pdev) +static void ks_pcie_remove(struct platform_device *pdev) { struct keystone_pcie *ks_pcie = platform_get_drvdata(pdev); struct device_link **link = ks_pcie->link; @@ -1314,13 +1314,11 @@ static int ks_pcie_remove(struct platform_device *pdev) ks_pcie_disable_phy(ks_pcie); while (num_lanes--) device_link_del(link[num_lanes]); - - return 0; } static struct platform_driver ks_pcie_driver = { .probe = ks_pcie_probe, - .remove = ks_pcie_remove, + .remove_new = ks_pcie_remove, .driver = { .name = "keystone-pcie", .of_match_table = ks_pcie_of_match, -- cgit From a5eee68931fcc6ecabd35651fed0c31439078e67 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Mon, 4 Dec 2023 10:47:42 +0100 Subject: PCI: kirin: 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(). In the error path emit an error message replacing the (less useful) message by the core. Apart from the improved error message there is no change in behaviour. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Link: https://lore.kernel.org/linux-pci/c3a51791d54deaa818b8526975fc4e16ef1090ce.1701682617.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König Signed-off-by: Krzysztof Wilczyński --- drivers/pci/controller/dwc/pcie-kirin.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c index 2ee146767971..ca317cb06fbd 100644 --- a/drivers/pci/controller/dwc/pcie-kirin.c +++ b/drivers/pci/controller/dwc/pcie-kirin.c @@ -741,15 +741,13 @@ err: return ret; } -static int kirin_pcie_remove(struct platform_device *pdev) +static void kirin_pcie_remove(struct platform_device *pdev) { struct kirin_pcie *kirin_pcie = platform_get_drvdata(pdev); dw_pcie_host_deinit(&kirin_pcie->pci->pp); kirin_pcie_power_off(kirin_pcie); - - return 0; } struct kirin_pcie_data { @@ -818,7 +816,7 @@ static int kirin_pcie_probe(struct platform_device *pdev) static struct platform_driver kirin_pcie_driver = { .probe = kirin_pcie_probe, - .remove = kirin_pcie_remove, + .remove_new = kirin_pcie_remove, .driver = { .name = "kirin-pcie", .of_match_table = kirin_pcie_match, -- cgit