linux-kernel - [PATCH] staging: pi433: add missing call to cdev

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Message-Id: <20181126175355.18800-1-straube.linux@gmail.com>
Date:   Mon, 26 Nov 2018 18:53:55 +0100
From:   Michael Straube <straube.linux@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     linux@...f-entwicklungen.de, dan.carpenter@...cle.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Subject: [PATCH] staging: pi433: add missing call to cdev_del()

If cdev_add() fails, cdev_del() should be called.
Add the missing cdev_del() call as pointed out by
Dan Carpenter.

Signed-off-by: Michael Straube <straube.linux@...il.com>
---
 drivers/staging/pi433/pi433_if.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index d72de2105053..abc98a544929 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -1254,6 +1254,7 @@ static int pi433_probe(struct spi_device *spi)
 	retval = cdev_add(device->cdev, device->devt, 1);
 	if (retval) {
 		dev_dbg(device->dev, "register of cdev failed");
+		cdev_del(device->cdev);
 		goto cdev_failed;
 	}
 
-- 
2.19.2