linux-kernel - [PATCH 3/8] iio: gyro: adis16136: Fix deadlock in probe

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Date:   Wed, 2 Nov 2022 16:18:38 +0200
From:   Ramona Bolboaca <ramona.bolboaca@...log.com>
To:     <jic23@...nel.org>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Ramona Bolboaca <ramona.bolboaca@...log.com>
Subject: [PATCH 3/8] iio: gyro: adis16136: Fix deadlock in probe

Use __adis_initial_startup instead of adis_initial_startup to
avoid deadlock.
When using adis_initial_startup mutex_lock is called twice,
without releasing it (once inside adis_initial_startup and
once inside adis_enable_irq).

Fixes: 100bfa38c8cb ("iio: imu: adis[16480]: group RW into a single lock in adis_enable_irq()")
Signed-off-by: Ramona Bolboaca <ramona.bolboaca@...log.com>
---
 drivers/iio/gyro/adis16136.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/gyro/adis16136.c b/drivers/iio/gyro/adis16136.c
index 71295709f2b9..c95cf41be34b 100644
--- a/drivers/iio/gyro/adis16136.c
+++ b/drivers/iio/gyro/adis16136.c
@@ -429,7 +429,7 @@ static int adis16136_initial_setup(struct iio_dev *indio_dev)
 	uint16_t prod_id;
 	int ret;
 
-	ret = adis_initial_startup(&adis16136->adis);
+	ret = __adis_initial_startup(&adis16136->adis);
 	if (ret)
 		return ret;
 
-- 
2.25.1