[PATCH 5.2 23/85] gpio: mockup: add missing single_release()

Greg Kroah-Hartman
2019-09-18T06:24:59Z

From: Wei Yongjun <weiyongjun1@huawei.com>

commit 59929d3a2eb6c4abafc5b61a20c98aa8728ec378 upstream.

When using single_open() for opening, single_release() should be
used instead of seq_release(), otherwise there is a memory leak.

Fixes: 2a9e27408e12 ("gpio: mockup: rework debugfs interface")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpio/gpio-mockup.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -309,6 +309,7 @@ static const struct file_operations gpio
.read = gpio_mockup_debugfs_read,
.write = gpio_mockup_debugfs_write,
.llseek = no_llseek,
+ .release = single_release,
};

static void gpio_mockup_debugfs_setup(struct device *dev,