power: supply: tps65217: Use 'poll_task' on unloading the module

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>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

diff --git a/drivers/power/supply/tps65217_charger.c b/drivers/power/supply/tps65217_charger.c
index 9fd019f..4fe71ab 100644 (file)
--- 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;