gpio: fix error path in lineevent_create

commit f001cc351ad3309ec8736c374e90e5a4bc472d41 upstream.

If gpiod_request() fails the cleanup must not call gpiod_free().

Cc: stable@vger.kernel.org
Fixes: 61f922db7221 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 65f751a..68ea6e7 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -813,7 +813,7 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip)
        desc = &gdev->descs[offset];
        ret = gpiod_request(desc, le->label);
        if (ret)
-               goto out_free_desc;
+               goto out_free_label;
        le->desc = desc;
        le->eflags = eflags;