From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de> To: Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: linux-clk@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 25/30] clk: stm32: Convert to platform remove callback returning void Date: Sun, 12 Mar 2023 17:15:07 +0100 [thread overview] Message-ID: <20230312161512.2715500-26-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20230312161512.2715500-1-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/clk/stm32/clk-stm32mp13.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/clk/stm32/clk-stm32mp13.c b/drivers/clk/stm32/clk-stm32mp13.c index 1192eee8abe4..c4a737482fe5 100644 --- a/drivers/clk/stm32/clk-stm32mp13.c +++ b/drivers/clk/stm32/clk-stm32mp13.c @@ -1593,15 +1593,13 @@ static int stm32mp1_rcc_clocks_probe(struct platform_device *pdev) return ret; } -static int stm32mp1_rcc_clocks_remove(struct platform_device *pdev) +static void stm32mp1_rcc_clocks_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *child, *np = dev_of_node(dev); for_each_available_child_of_node(np, child) of_clk_del_provider(child); - - return 0; } static struct platform_driver stm32mp13_rcc_clocks_driver = { @@ -1610,7 +1608,7 @@ static struct platform_driver stm32mp13_rcc_clocks_driver = { .of_match_table = stm32mp13_match_data, }, .probe = stm32mp1_rcc_clocks_probe, - .remove = stm32mp1_rcc_clocks_remove, + .remove_new = stm32mp1_rcc_clocks_remove, }; static int __init stm32mp13_clocks_init(void) -- 2.39.1
WARNING: multiple messages have this Message-ID (diff)
From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de> To: Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: linux-clk@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 25/30] clk: stm32: Convert to platform remove callback returning void Date: Sun, 12 Mar 2023 17:15:07 +0100 [thread overview] Message-ID: <20230312161512.2715500-26-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20230312161512.2715500-1-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/clk/stm32/clk-stm32mp13.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/clk/stm32/clk-stm32mp13.c b/drivers/clk/stm32/clk-stm32mp13.c index 1192eee8abe4..c4a737482fe5 100644 --- a/drivers/clk/stm32/clk-stm32mp13.c +++ b/drivers/clk/stm32/clk-stm32mp13.c @@ -1593,15 +1593,13 @@ static int stm32mp1_rcc_clocks_probe(struct platform_device *pdev) return ret; } -static int stm32mp1_rcc_clocks_remove(struct platform_device *pdev) +static void stm32mp1_rcc_clocks_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *child, *np = dev_of_node(dev); for_each_available_child_of_node(np, child) of_clk_del_provider(child); - - return 0; } static struct platform_driver stm32mp13_rcc_clocks_driver = { @@ -1610,7 +1608,7 @@ static struct platform_driver stm32mp13_rcc_clocks_driver = { .of_match_table = stm32mp13_match_data, }, .probe = stm32mp1_rcc_clocks_probe, - .remove = stm32mp1_rcc_clocks_remove, + .remove_new = stm32mp1_rcc_clocks_remove, }; static int __init stm32mp13_clocks_init(void) -- 2.39.1 _______________________________________________ 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:[~2023-03-12 16:16 UTC|newest] Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-03-12 16:14 [PATCH 00/30] clk: Convert to platform remove callback returning void Uwe Kleine-König 2023-03-12 16:14 ` Uwe Kleine-König 2023-03-12 16:14 ` [PATCH 01/30] clk: mediatek: Make mtk_clk_simple_remove() return void Uwe Kleine-König 2023-03-12 16:14 ` Uwe Kleine-König 2023-03-13 8:54 ` AngeloGioacchino Del Regno 2023-03-13 8:54 ` AngeloGioacchino Del Regno 2023-03-13 9:45 ` Uwe Kleine-König 2023-03-13 9:45 ` Uwe Kleine-König 2023-03-12 16:14 ` [PATCH 02/30] clk: tegra: Don't warn three times about failure to unregister Uwe Kleine-König 2023-03-29 2:34 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 03/30] clk: xilinx: Drop if block with always false condition Uwe Kleine-König 2023-03-12 16:14 ` Uwe Kleine-König 2023-03-29 2:35 ` Stephen Boyd 2023-03-29 2:35 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 04/30] clk: axs10x: Convert to platform remove callback returning void Uwe Kleine-König 2023-03-29 2:35 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 05/30] clk: bcm: " Uwe Kleine-König 2023-03-12 16:14 ` Uwe Kleine-König 2023-03-14 21:28 ` Florian Fainelli 2023-03-14 21:28 ` Florian Fainelli 2023-03-29 2:35 ` Stephen Boyd 2023-03-29 2:35 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 06/30] clk: axi-clkgen: " Uwe Kleine-König 2023-03-29 2:36 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 07/30] clk: axm5516: " Uwe Kleine-König 2023-03-29 2:36 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 08/30] clk: fixed-factor: " Uwe Kleine-König 2023-03-29 2:36 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 09/30] clk: fixed-mmio: " Uwe Kleine-König 2023-03-29 2:36 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 10/30] clk: fixed-rate: " Uwe Kleine-König 2023-03-29 2:37 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 11/30] clk: hsdk-pll: " Uwe Kleine-König 2023-03-29 2:37 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 12/30] clk: palmas: " Uwe Kleine-König 2023-03-29 2:37 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 13/30] clk: pwm: " Uwe Kleine-König 2023-03-29 2:37 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 14/30] clk: s2mps11: " Uwe Kleine-König 2023-03-12 16:22 ` Krzysztof Kozlowski 2023-03-29 2:37 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 15/30] clk: scpi: " Uwe Kleine-König 2023-03-12 16:14 ` Uwe Kleine-König 2023-03-16 15:01 ` Sudeep Holla 2023-03-16 15:01 ` Sudeep Holla 2023-03-16 15:48 ` Uwe Kleine-König 2023-03-16 15:48 ` Uwe Kleine-König 2023-03-17 0:31 ` Stephen Boyd 2023-03-17 0:31 ` Stephen Boyd 2023-03-29 2:38 ` Stephen Boyd 2023-03-29 2:38 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 16/30] clk: stm32mp1: " Uwe Kleine-König 2023-03-12 16:14 ` Uwe Kleine-König 2023-03-29 2:38 ` Stephen Boyd 2023-03-29 2:38 ` Stephen Boyd 2023-03-12 16:14 ` [PATCH 17/30] clk: hisilicon: " Uwe Kleine-König 2023-03-29 2:38 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 18/30] clk: keystone: " Uwe Kleine-König 2023-03-12 16:15 ` Uwe Kleine-König 2023-03-29 2:39 ` Stephen Boyd 2023-03-29 2:39 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 19/30] clk: mediatek: " Uwe Kleine-König 2023-03-12 16:15 ` Uwe Kleine-König 2023-03-29 2:39 ` Stephen Boyd 2023-03-29 2:39 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 20/30] clk: mmp: " Uwe Kleine-König 2023-03-29 2:39 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 21/30] clk: mvebu: " Uwe Kleine-König 2023-03-29 2:39 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 22/30] clk: qcom: " Uwe Kleine-König 2023-03-12 16:15 ` [PATCH 23/30] clk: renesas: " Uwe Kleine-König 2023-03-13 9:05 ` Geert Uytterhoeven 2023-03-12 16:15 ` [PATCH 24/30] clk: samsung: " Uwe Kleine-König 2023-03-12 16:15 ` Uwe Kleine-König 2023-03-12 16:33 ` (subset) " Krzysztof Kozlowski 2023-03-12 16:33 ` Krzysztof Kozlowski 2023-03-12 16:15 ` Uwe Kleine-König [this message] 2023-03-12 16:15 ` [PATCH 25/30] clk: stm32: " Uwe Kleine-König 2023-03-29 2:40 ` Stephen Boyd 2023-03-29 2:40 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 26/30] clk: tegra: " Uwe Kleine-König 2023-03-29 2:40 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 27/30] clk: ti: " Uwe Kleine-König 2023-03-29 2:40 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 28/30] clk: uniphier: " Uwe Kleine-König 2023-03-12 16:15 ` Uwe Kleine-König 2023-03-29 2:40 ` Stephen Boyd 2023-03-29 2:40 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 29/30] clk: x86: " Uwe Kleine-König 2023-03-29 2:40 ` Stephen Boyd 2023-03-12 16:15 ` [PATCH 30/30] clk: xilinx: " Uwe Kleine-König 2023-03-12 16:15 ` Uwe Kleine-König 2023-03-29 2:41 ` Stephen Boyd 2023-03-29 2:41 ` Stephen Boyd 2023-03-15 23:35 ` (subset) [PATCH 00/30] clk: " Bjorn Andersson 2023-03-15 23:35 ` Bjorn Andersson
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