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Date: Tue, 7 Jun 2022 19:03:08 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Rex-BC Chen <rex-bc.chen@...iatek.com>, Viresh Kumar <viresh.kumar@...aro.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.18 670/879] cpufreq: mediatek: Unregister platform device on exit From: Rex-BC Chen <rex-bc.chen@...iatek.com> [ Upstream commit f126fbadce92b92c3a7be41e4abc1fbae93ae2ef ] We register the platform device when driver inits. However, we do not unregister it when driver exits. To resolve this, we declare the platform data to be a global static variable and rename it to be "cpufreq_pdev". With this global variable, we can do platform_device_unregister() when driver exits. Fixes: 501c574f4e3a ("cpufreq: mediatek: Add support of cpufreq to MT2701/MT7623 SoC") Signed-off-by: Rex-BC Chen <rex-bc.chen@...iatek.com> [ Viresh: Commit log and Subject ] Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/cpufreq/mediatek-cpufreq.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index 9d7d9c8dc184..bfe240c726e3 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -44,6 +44,8 @@ struct mtk_cpu_dvfs_info { bool need_voltage_tracking; }; +static struct platform_device *cpufreq_pdev; + static LIST_HEAD(dvfs_info_list); static struct mtk_cpu_dvfs_info *mtk_cpu_dvfs_info_lookup(int cpu) @@ -547,7 +549,6 @@ static int __init mtk_cpufreq_driver_init(void) { struct device_node *np; const struct of_device_id *match; - struct platform_device *pdev; int err; np = of_find_node_by_path("/"); @@ -571,11 +572,11 @@ static int __init mtk_cpufreq_driver_init(void) * and the device registration codes are put here to handle defer * probing. */ - pdev = platform_device_register_simple("mtk-cpufreq", -1, NULL, 0); - if (IS_ERR(pdev)) { + cpufreq_pdev = platform_device_register_simple("mtk-cpufreq", -1, NULL, 0); + if (IS_ERR(cpufreq_pdev)) { pr_err("failed to register mtk-cpufreq platform device\n"); platform_driver_unregister(&mtk_cpufreq_platdrv); - return PTR_ERR(pdev); + return PTR_ERR(cpufreq_pdev); } return 0; @@ -584,6 +585,7 @@ module_init(mtk_cpufreq_driver_init) static void __exit mtk_cpufreq_driver_exit(void) { + platform_device_unregister(cpufreq_pdev); platform_driver_unregister(&mtk_cpufreq_platdrv); } module_exit(mtk_cpufreq_driver_exit) -- 2.35.1
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