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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Jiasheng Jiang <jiasheng@iscas.ac.cn>,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 164/338] iio: adc: Add check for devm_request_threaded_irq
Date:   Thu, 14 Apr 2022 15:11:07 +0200
Message-Id: <20220414110843.569854517@linuxfoundation.org>
In-Reply-To: <20220414110838.883074566@linuxfoundation.org>
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From: Jiasheng Jiang <jiasheng@iscas.ac.cn>

[ Upstream commit b30537a4cedcacf0ade2f33ebb7610178ed1e7d7 ]

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@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220224062849.3280966-1-jiasheng@iscas.ac.cn
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 e470510e76ea..765aaee157e2 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -927,6 +927,8 @@ 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) {
-- 
2.34.1