patch "iio: dln2: Check return value of devm_iio_trigger_register()" added to char-misc-linus

This is a note to let you know that I've just added the patch titled

iio: dln2: Check return value of devm_iio_trigger_register()

to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 90751fb9f224e0e1555b49a8aa9e68f6537e4cec Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <[email protected]>
Date: Mon, 1 Nov 2021 14:30:43 +0100
Subject: iio: dln2: Check return value of devm_iio_trigger_register()

Registering a trigger can fail and the return value of devm_iio_trigger_register() must be checked. Otherwise undefined behavior can occur when the trigger is used.

---
 drivers/iio/adc/dln2-adc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

index 6c67192946aa..97d162a3cba4 100644
@@ -655,7 +655,11 @@ static int dln2_adc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 	iio_trigger_set_drvdata(dln2->trig, dln2);
-	devm_iio_trigger_register(dev, dln2->trig);
+	ret = devm_iio_trigger_register(dev, dln2->trig);
+	if (ret) {
+		dev_err(dev, "failed to register trigger: %d\n", ret);
+		return ret;
+	}
 	iio_trigger_set_immutable(indio_dev, dln2->trig);
 
 	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,

2.34.1