[PATCH] ASoC: codec: rt298: Use devm_request_threaded_irq to manage IRQ lifetime and fix smatch warning

[hariconscious@gmail.com]

From: HariKrishna Sagala <hariconscious@gmail.com>

Replace manual "request_threaded_irq()" with the device managed
"devm_request_threaded_irq" to manage the IRQ lifetime and also
it removes the smatch reported warning.
Remove the manual "free_irq()" in the "remove" function as free_irq
is tied to device teardown.

Signed-off-by: HariKrishna Sagala <hariconscious@gmail.com>
---
This patch replaces the manual management of IRQ with the device
managed IRQ API. Also, it removes the smatch reported warning.

sound/soc/codecs/rt298.c:1298 rt298_i2c_probe() warn: 'rt298->i2c->irq'
from request_threaded_irq() not released on lines: 1298.

Removed the "remove" function as IRQ is managed automatically.

Thank you.

 sound/soc/codecs/rt298.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/sound/soc/codecs/rt298.c b/sound/soc/codecs/rt298.c
index 02247593513a..7d532a5a5f73 100644
--- a/sound/soc/codecs/rt298.c
+++ b/sound/soc/codecs/rt298.c
@@ -1282,7 +1282,7 @@ static int rt298_i2c_probe(struct i2c_client *i2c)
 	rt298->is_hp_in = -1;
 
 	if (rt298->i2c->irq) {
-		ret = request_threaded_irq(rt298->i2c->irq, NULL, rt298_irq,
+		ret = devm_request_threaded_irq(&rt298->i2c->dev, rt298->i2c->irq, NULL, rt298_irq,
 			IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "rt298", rt298);
 		if (ret != 0) {
 			dev_err(&i2c->dev,
@@ -1298,22 +1298,12 @@ static int rt298_i2c_probe(struct i2c_client *i2c)
 	return ret;
 }
 
-static void rt298_i2c_remove(struct i2c_client *i2c)
-{
-	struct rt298_priv *rt298 = i2c_get_clientdata(i2c);
-
-	if (i2c->irq)
-		free_irq(i2c->irq, rt298);
-}
-
-
 static struct i2c_driver rt298_i2c_driver = {
 	.driver = {
 		   .name = "rt298",
 		   .acpi_match_table = ACPI_PTR(rt298_acpi_match),
 		   },
 	.probe = rt298_i2c_probe,
-	.remove = rt298_i2c_remove,
 	.id_table = rt298_i2c_id,
 };
 

base-commit: ea1013c1539270e372fc99854bc6e4d94eaeff66
-- 
2.43.0