From: Johan Hovold <johan@xxxxxxxxxx>
This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.
===============
commit 0f303db08df0df9bd0966443ad6001e63960af16 upstream.
Fix memory leak in the gpio sysfs interface due to failure to drop
reference to device returned by class_find_device when creating a link.
Fixes: a4177ee7f1a8 ("gpiolib: allow exported GPIO nodes to be named using sysfs links")
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
drivers/gpio/gpiolib.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index e66d1cdb637d..4840c05862e7 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -864,6 +864,7 @@ static int gpiod_export_link(struct device *dev, const char *name,
if (tdev != NULL) {
status = sysfs_create_link(&dev->kobj, &tdev->kobj,
name);
+ put_device(tdev);
} else {
status = -ENODEV;
}
--
2.2.2
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