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Subject[PATCH v3 1/7] power: supply: tps65217: Use 'poll_task' on unloading the module
Date
Use the task_struct variable for running polling thread. If polling task
is activated, then use it to stop running thread.
This is a preceding step of supporting two interrupts of TPS65217 charger,
so checking single IRQ number is not appropriate when the module is removed.

Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
---
drivers/power/supply/tps65217_charger.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/power/supply/tps65217_charger.c b/drivers/power/supply/tps65217_charger.c
index 9fd019f9b88c..4fe71abe1bd3 100644
--- a/drivers/power/supply/tps65217_charger.c
+++ b/drivers/power/supply/tps65217_charger.c
@@ -200,6 +200,7 @@ static int tps65217_charger_probe(struct platform_device *pdev)
struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
struct tps65217_charger *charger;
struct power_supply_config cfg = {};
+ struct task_struct *poll_task;
int irq;
int ret;

@@ -250,14 +251,16 @@ static int tps65217_charger_probe(struct platform_device *pdev)
/* Check current state */
tps65217_charger_irq(irq, charger);
} else {
- charger->poll_task = kthread_run(tps65217_charger_poll_task,
- charger, "ktps65217charger");
- if (IS_ERR(charger->poll_task)) {
- ret = PTR_ERR(charger->poll_task);
+ poll_task = kthread_run(tps65217_charger_poll_task,
+ charger, "ktps65217charger");
+ if (IS_ERR(poll_task)) {
+ ret = PTR_ERR(poll_task);
dev_err(charger->dev,
"Unable to run kthread err %d\n", ret);
return ret;
}
+
+ charger->poll_task = poll_task;
}

return 0;
@@ -267,7 +270,7 @@ static int tps65217_charger_remove(struct platform_device *pdev)
{
struct tps65217_charger *charger = platform_get_drvdata(pdev);

- if (charger->irq == -ENXIO)
+ if (charger->poll_task)
kthread_stop(charger->poll_task);

return 0;
--
2.11.0
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