linux-kernel - [PATCH] iio: adc: Add check for devm_request_threaded

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Date:   Thu, 24 Feb 2022 14:28:49 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     jic23@...nel.org, lars@...afoo.de, tangbin@...s.chinamobile.com
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: [PATCH] iio: adc: Add check for devm_request_threaded_irq

As the potential failure of the devm_request_threaded_irq(),
it should be better to check the return value and return
error if fails.

Fixes: fa659a40b80b ("iio: adc: twl6030-gpadc: Use devm_* API family")
Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
---
 drivers/iio/adc/twl6030-gpadc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
index afdb59e0b526..d0223e39d59a 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -911,6 +911,8 @@ static int twl6030_gpadc_probe(struct platform_device *pdev)
 	ret = devm_request_threaded_irq(dev, irq, NULL,
 				twl6030_gpadc_irq_handler,
 				IRQF_ONESHOT, "twl6030_gpadc", indio_dev);
+	if (ret)
+		return ret;
 
 	ret = twl6030_gpadc_enable_irq(TWL6030_GPADC_RT_SW1_EOC_MASK);
 	if (ret < 0) {
-- 
2.25.1