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gpio: fix error path in lineevent_create 

commit f001cc351a upstream.

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

Cc: stable@vger.kernel.org
Fixes: 61f922db72 ("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>
pull/10/head
Uwe Kleine-König 2018-04-16 13:17:53 +02:00 committed by Greg Kroah-Hartman
parent 28534d2947
commit a7ea57b025
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpiolib.c
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@ -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;