linux-kernel - [PATCH] iio: mma8452: add missed iio_device

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Date:   Wed, 27 May 2020 23:06:06 +0800
From:   Chuhong Yuan <hslester96@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chuhong Yuan <hslester96@...il.com>
Subject: [PATCH] iio: mma8452: add missed iio_device_unregister in probe failure

mma8452_probe() calls iio_device_register() but misses to call
iio_device_unregister() when probe fails.
Add the missed call in error handler to fix it.

Signed-off-by: Chuhong Yuan <hslester96@...il.com>
---
 drivers/iio/accel/mma8452.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 00e100fc845a..813bca7cfc3e 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -1685,10 +1685,13 @@ static int mma8452_probe(struct i2c_client *client,
 
 	ret = mma8452_set_freefall_mode(data, false);
 	if (ret < 0)
-		goto buffer_cleanup;
+		goto unregister_device;
 
 	return 0;
 
+unregister_device:
+	iio_device_unregister(indio_dev);
+
 buffer_cleanup:
 	iio_triggered_buffer_cleanup(indio_dev);
 
-- 
2.26.2