[PATCH 04/11] net/9p/usbg: always reset completion when disconnecting

[Michael Grzeschik]

When some tx or rx transfers were pending while closing the connection,
the completion handler could catch one pending completion call. To
ensure a normal start when mounting again, we have to reset the
completion and flush any pending completions.

Fixes: a3be076dc174 ("net/9p/usbg: Add new usb gadget function transport")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
 net/9p/trans_usbg.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/9p/trans_usbg.c b/net/9p/trans_usbg.c
index 6ddf6886dbadd7cdfdebb96dc767874169ccb16e..d6391db6d5d96a1609a3405646f66d82c93d35f1 100644
--- a/net/9p/trans_usbg.c
+++ b/net/9p/trans_usbg.c
@@ -497,6 +497,7 @@ static void p9_usbg_close(struct p9_client *client)
 	mutex_unlock(&usb9pfs_lock);
 
 	disable_usb9pfs(usb9pfs);
+	reinit_completion(&usb9pfs->send);
 }
 
 static int p9_usbg_request(struct p9_client *client, struct p9_req_t *p9_req)
@@ -786,6 +787,7 @@ static void usb9pfs_disable(struct usb_function *f)
 		usb9pfs->client->status = Disconnected;
 	spin_unlock_irqrestore(&usb9pfs->lock, flags);
 	usb9pfs_clear_tx(usb9pfs);
+	reinit_completion(&usb9pfs->send);
 }
 
 static struct usb_function *usb9pfs_alloc(struct usb_function_instance *fi)

-- 
2.47.3