From: Hangyu Hua <hbh25y@xxxxxxxxx>
commit 0a96fa640dc928da9eaa46a22c46521b037b78ad upstream.
usb_put_dev shouldn't be called when uss720_probe succeeds because of
priv->usbdev. At the same time, priv->usbdev shouldn't be set to NULL
before destroy_priv in uss720_disconnect because usb_put_dev is in
destroy_priv.
Fix this by moving priv->usbdev = NULL after usb_put_dev.
Fixes: dcb4b8ad6a44 ("misc/uss720: fix memory leak in uss720_probe")
Cc: stable <stable@xxxxxxxxxx>
Reviewed-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220407024001.11761-1-hbh25y@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/misc/uss720.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/usb/misc/uss720.c
+++ b/drivers/usb/misc/uss720.c
@@ -84,6 +84,7 @@ static void destroy_priv(struct kref *kr
dev_dbg(&priv->usbdev->dev, "destroying priv datastructure\n");
usb_put_dev(priv->usbdev);
+ priv->usbdev = NULL;
kfree(priv);
}
@@ -749,7 +750,6 @@ static int uss720_probe(struct usb_inter
parport_announce_port(pp);
usb_set_intfdata(intf, pp);
- usb_put_dev(usbdev);
return 0;
probe_abort:
@@ -769,7 +769,6 @@ static void uss720_disconnect(struct usb
if (pp) {
priv = pp->private_data;
usbdev = priv->usbdev;
- priv->usbdev = NULL;
priv->pp = NULL;
dev_dbg(&intf->dev, "parport_remove_port\n");
parport_remove_port(pp);
