diff options
| -rw-r--r-- | drivers/usb/class/cdc-wdm.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 441287e8f39..2236fe763fc 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -309,9 +309,6 @@ static void free_urbs(struct wdm_device *desc) static void cleanup(struct wdm_device *desc) { - spin_lock(&wdm_device_list_lock); - list_del(&desc->device_list); - spin_unlock(&wdm_device_list_lock); kfree(desc->sbuf); kfree(desc->inbuf); kfree(desc->orq); @@ -782,6 +779,9 @@ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor out: return rv; err: + spin_lock(&wdm_device_list_lock); + list_del(&desc->device_list); + spin_unlock(&wdm_device_list_lock); cleanup(desc); return rv; } @@ -907,6 +907,12 @@ static void wdm_disconnect(struct usb_interface *intf) cancel_work_sync(&desc->rxwork); mutex_unlock(&desc->wlock); mutex_unlock(&desc->rlock); + + /* the desc->intf pointer used as list key is now invalid */ + spin_lock(&wdm_device_list_lock); + list_del(&desc->device_list); + spin_unlock(&wdm_device_list_lock); + if (!desc->count) cleanup(desc); else |