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

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

[hariconscious]

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

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

[Mark Brown]

On Wed, 17 Dec 2025 16:13:58 +0530, hariconscious@gmail.com wrote:
> 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.
> 
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: codec: rt298: Use devm_request_threaded_irq to manage IRQ lifetime and fix smatch warning
      commit: 3a4e4e0003678a87600e82d02c9522af282a5c0b

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark