[PATCH 1/2] gpio: sysfs: fix memory leak in gpiod_export_link

[Johan Hovold <johan@xxxxxxxxxx>]

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")
Cc: stable <stable@xxxxxxxxxxxxxxx>	# v2.6.32
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
 drivers/gpio/gpiolib-sysfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c
index 14c4f94813eb..820b1e70ddfe 100644
--- a/drivers/gpio/gpiolib-sysfs.c
+++ b/drivers/gpio/gpiolib-sysfs.c
@@ -648,6 +648,7 @@ 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;
 		}
-- 
2.0.5

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