From 009cf422dcc84030aadd010dd53ae7b295992f52 Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Wed, 30 Oct 2024 18:19:18 +0200
Subject: [PATCH] iio: adc: ad4000: Check for error code from devm_mutex_init()
call
[ Upstream commit 8ebfd09255219ae55f8a101f6aeb0f64dd780d88 ]
Even if it's not critical, the avoidance of checking the error code
from devm_mutex_init() call today diminishes the point of using devm
variant of it. Tomorrow it may even leak something. Add the missed
check.
Fixes: 938fd562b974 ("iio: adc: Add support for AD4000")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20241030162013.2100253-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iio/adc/ad4000.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ad4000.c b/drivers/iio/adc/ad4000.c
index fc9c9807f89d2..b3b82535f5c14 100644
--- a/drivers/iio/adc/ad4000.c
+++ b/drivers/iio/adc/ad4000.c
@@ -639,7 +639,9 @@ static int ad4000_probe(struct spi_device *spi)
indio_dev->name = chip->dev_name;
indio_dev->num_channels = 1;
- devm_mutex_init(dev, &st->lock);
+ ret = devm_mutex_init(dev, &st->lock);
+ if (ret)
+ return ret;
st->gain_milli = 1000;
if (chip->has_hardware_gain) {
--
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