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.
Signed-off-by: Rex-BC Chen <rex-bc.chen@xxxxxxxxxxxx>
---
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 901042e9a240..d15cbef4a72e 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -43,6 +43,8 @@ struct mtk_cpu_dvfs_info {
int pre_vproc;
};
+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)
@@ -578,7 +580,6 @@ 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("/");
@@ -602,11 +603,11 @@ 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;
@@ -615,6 +616,7 @@ 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)
--
2.18.0
