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cpufreq: mediatek: Unregister platform device on exit 

[ Upstream commit f126fbadce ]

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: 501c574f4e ("cpufreq: mediatek: Add support of cpufreq to MT2701/MT7623 SoC")
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
[ Viresh: Commit log and Subject ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Rex-BC Chen 2022-05-05 19:52:18 +08:00 committed by Greg Kroah-Hartman
parent 930df2ea22
commit e2722f60c5
1 changed files with 6 additions and 4 deletions
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10
drivers/cpufreq/mediatek-cpufreq.c
View File

@ -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)