mei: clear write cb from waiting list on reset

Clear write callbacks sitting in write_waiting list on reset.
Otherwise these callbacks are left dangling and cause memory leak.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 1ee2b9492a82527d508b4396647f75823956e28c..ccdacb5fcd8be6a6b5a0d53ff0dab029bf3688c0 100644 (file)
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -942,8 +942,16 @@ void mei_cl_all_wakeup(struct mei_device *dev)
 void mei_cl_all_write_clear(struct mei_device *dev)
 {
        struct mei_cl_cb *cb, *next;
+       struct list_head *list;
 
-       list_for_each_entry_safe(cb, next, &dev->write_list.list, list) {
+       list = &dev->write_list.list;
+       list_for_each_entry_safe(cb, next, list, list) {
+               list_del(&cb->list);
+               mei_io_cb_free(cb);
+       }
+
+       list = &dev->write_waiting_list.list;
+       list_for_each_entry_safe(cb, next, list, list) {
                list_del(&cb->list);
                mei_io_cb_free(cb);
        }