From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de> To: "Ryder Lee" <ryder.lee@mediatek.com>, "Jianjun Wang" <jianjun.wang@mediatek.com>, "Lorenzo Pieralisi" <lpieralisi@kernel.org>, "Krzysztof Wilczyński" <kw@linux.com>, "Bjorn Helgaas" <bhelgaas@google.com>, "Matthias Brugger" <matthias.bgg@gmail.com> Cc: Rob Herring <robh@kernel.org>, AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>, linux-pci@vger.kernel.org, linux-mediatek@lists.infradead.org, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org Subject: [PATCH 10/15] PCI: mediatek-gen3: Convert to platform remove callback returning void Date: Tue, 21 Mar 2023 20:32:03 +0100 [thread overview] Message-ID: <20230321193208.366561-11-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20230321193208.366561-1-u.kleine-koenig@pengutronix.de> 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 (mostly) ignored 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. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/pci/controller/pcie-mediatek-gen3.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index b8612ce5f4d0..e0e27645fdf4 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -943,7 +943,7 @@ static int mtk_pcie_probe(struct platform_device *pdev) return 0; } -static int mtk_pcie_remove(struct platform_device *pdev) +static void mtk_pcie_remove(struct platform_device *pdev) { struct mtk_gen3_pcie *pcie = platform_get_drvdata(pdev); struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie); @@ -955,8 +955,6 @@ static int mtk_pcie_remove(struct platform_device *pdev) mtk_pcie_irq_teardown(pcie); mtk_pcie_power_down(pcie); - - return 0; } static void mtk_pcie_irq_save(struct mtk_gen3_pcie *pcie) @@ -1069,7 +1067,7 @@ MODULE_DEVICE_TABLE(of, mtk_pcie_of_match); static struct platform_driver mtk_pcie_driver = { .probe = mtk_pcie_probe, - .remove = mtk_pcie_remove, + .remove_new = mtk_pcie_remove, .driver = { .name = "mtk-pcie-gen3", .of_match_table = mtk_pcie_of_match, -- 2.39.2
WARNING: multiple messages have this Message-ID (diff)
From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de> To: "Ryder Lee" <ryder.lee@mediatek.com>, "Jianjun Wang" <jianjun.wang@mediatek.com>, "Lorenzo Pieralisi" <lpieralisi@kernel.org>, "Krzysztof Wilczyński" <kw@linux.com>, "Bjorn Helgaas" <bhelgaas@google.com>, "Matthias Brugger" <matthias.bgg@gmail.com> Cc: Rob Herring <robh@kernel.org>, AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>, linux-pci@vger.kernel.org, linux-mediatek@lists.infradead.org, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org Subject: [PATCH 10/15] PCI: mediatek-gen3: Convert to platform remove callback returning void Date: Tue, 21 Mar 2023 20:32:03 +0100 [thread overview] Message-ID: <20230321193208.366561-11-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20230321193208.366561-1-u.kleine-koenig@pengutronix.de> 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 (mostly) ignored 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. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/pci/controller/pcie-mediatek-gen3.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index b8612ce5f4d0..e0e27645fdf4 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -943,7 +943,7 @@ static int mtk_pcie_probe(struct platform_device *pdev) return 0; } -static int mtk_pcie_remove(struct platform_device *pdev) +static void mtk_pcie_remove(struct platform_device *pdev) { struct mtk_gen3_pcie *pcie = platform_get_drvdata(pdev); struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie); @@ -955,8 +955,6 @@ static int mtk_pcie_remove(struct platform_device *pdev) mtk_pcie_irq_teardown(pcie); mtk_pcie_power_down(pcie); - - return 0; } static void mtk_pcie_irq_save(struct mtk_gen3_pcie *pcie) @@ -1069,7 +1067,7 @@ MODULE_DEVICE_TABLE(of, mtk_pcie_of_match); static struct platform_driver mtk_pcie_driver = { .probe = mtk_pcie_probe, - .remove = mtk_pcie_remove, + .remove_new = mtk_pcie_remove, .driver = { .name = "mtk-pcie-gen3", .of_match_table = mtk_pcie_of_match, -- 2.39.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-03-21 19:33 UTC|newest] Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-03-21 19:31 [PATCH 00/15] PCI: Convert to platform remove callback returning void Uwe Kleine-König 2023-03-21 19:31 ` Uwe Kleine-König 2023-03-21 19:31 ` Uwe Kleine-König 2023-03-21 19:31 ` [PATCH 01/15] PCI: aardvark: " Uwe Kleine-König 2023-03-21 19:31 ` Uwe Kleine-König 2023-03-21 19:36 ` Pali Rohár 2023-03-21 19:36 ` Pali Rohár 2023-03-21 21:08 ` Uwe Kleine-König 2023-03-21 21:08 ` Uwe Kleine-König 2023-03-21 19:31 ` [PATCH 02/15] PCI: altera: " Uwe Kleine-König 2023-03-21 19:31 ` [PATCH 03/15] PCI: altera-msi: " Uwe Kleine-König 2023-03-21 19:31 ` [PATCH 04/15] PCI: brcmstb: " Uwe Kleine-König 2023-03-21 19:31 ` Uwe Kleine-König 2023-03-21 21:37 ` Florian Fainelli 2023-03-21 21:37 ` Florian Fainelli 2023-03-21 19:31 ` [PATCH 05/15] PCI: cadence/j721e: " Uwe Kleine-König 2023-03-21 19:31 ` Uwe Kleine-König 2023-03-21 19:31 ` [PATCH 06/15] PCI: dwc/*: " Uwe Kleine-König 2023-03-22 18:06 ` Serge Semin 2023-03-21 19:32 ` [PATCH 07/15] PCI: hisi-error: " Uwe Kleine-König 2023-03-21 19:32 ` [PATCH 08/15] PCI: iproc: " Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König 2023-03-21 21:37 ` Florian Fainelli 2023-03-21 21:37 ` Florian Fainelli 2023-03-21 19:32 ` [PATCH 09/15] PCI: mediatek: " Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König [this message] 2023-03-21 19:32 ` [PATCH 10/15] PCI: mediatek-gen3: " Uwe Kleine-König 2023-03-21 19:32 ` [PATCH 11/15] PCI: mt7621: " Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König 2023-03-22 6:40 ` Sergio Paracuellos 2023-03-22 6:40 ` Sergio Paracuellos 2023-03-21 19:32 ` [PATCH 12/15] PCI: mvebu: " Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König 2023-03-21 19:32 ` [PATCH 13/15] PCI: rockchip-host: " Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König 2023-03-21 19:32 ` [PATCH 14/15] PCI: tegra: " Uwe Kleine-König 2023-03-21 19:32 ` [PATCH 15/15] PCI: xgene-msi: " Uwe Kleine-König 2023-03-21 19:32 ` Uwe Kleine-König 2023-05-30 14:07 ` [PATCH 00/15] PCI: " Uwe Kleine-König 2023-05-30 14:07 ` Uwe Kleine-König 2023-05-30 14:07 ` Uwe Kleine-König 2023-06-02 21:37 ` Bjorn Helgaas 2023-06-02 21:37 ` Bjorn Helgaas 2023-06-02 21:37 ` Bjorn Helgaas 2023-06-06 16:02 ` Uwe Kleine-König 2023-06-06 16:02 ` Uwe Kleine-König 2023-06-06 16:02 ` Uwe Kleine-König 2023-06-24 14:23 ` Krzysztof Wilczyński 2023-06-24 14:23 ` Krzysztof Wilczyński 2023-06-24 14:23 ` Krzysztof Wilczyński 2023-06-11 13:24 ` Pali Rohár 2023-06-11 13:24 ` Pali Rohár 2023-06-12 16:19 ` Bjorn Helgaas 2023-06-12 16:19 ` Bjorn Helgaas 2023-06-12 16:19 ` Bjorn Helgaas 2023-06-12 18:17 ` Pali Rohár 2023-06-12 18:17 ` Pali Rohár 2023-06-12 18:17 ` Pali Rohár 2023-06-24 14:19 ` Krzysztof Wilczyński 2023-06-24 14:19 ` Krzysztof Wilczyński 2023-06-24 14:19 ` Krzysztof Wilczyński
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