From: Oliver Neukum <oneukum@suse.com>
Date: Wed, 5 Aug 2020 12:07:07 +0000 (+0200)
Subject: hso: fix bailout in error case of probe
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5fcfb6d0bfcda17f0d0656e4e5b3710af2bbaae5;p=linux.git

hso: fix bailout in error case of probe

The driver tries to reuse code for disconnect in case
of a failed probe.
If resources need to be freed after an error in probe, the
netdev must not be freed because it has never been registered.
Fix it by telling the helper which path we are in.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index d2fdb5430d272..031a5ad255001 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2357,7 +2357,7 @@ static int remove_net_device(struct hso_device *hso_dev)
 }
 
 /* Frees our network device */
-static void hso_free_net_device(struct hso_device *hso_dev)
+static void hso_free_net_device(struct hso_device *hso_dev, bool bailout)
 {
 	int i;
 	struct hso_net *hso_net = dev2net(hso_dev);
@@ -2380,7 +2380,7 @@ static void hso_free_net_device(struct hso_device *hso_dev)
 	kfree(hso_net->mux_bulk_tx_buf);
 	hso_net->mux_bulk_tx_buf = NULL;
 
-	if (hso_net->net)
+	if (hso_net->net && !bailout)
 		free_netdev(hso_net->net);
 
 	kfree(hso_dev);
@@ -2556,7 +2556,7 @@ static struct hso_device *hso_create_net_device(struct usb_interface *interface,
 
 	return hso_dev;
 exit:
-	hso_free_net_device(hso_dev);
+	hso_free_net_device(hso_dev, true);
 	return NULL;
 }
 
@@ -3133,7 +3133,7 @@ static void hso_free_interface(struct usb_interface *interface)
 				rfkill_unregister(rfk);
 				rfkill_destroy(rfk);
 			}
-			hso_free_net_device(network_table[i]);
+			hso_free_net_device(network_table[i], false);
 		}
 	}
 }