From: Alexander Usyskin <alexander.usyskin@intel.com>
Date: Mon, 27 Jan 2014 20:27:23 +0000 (+0200)
Subject: mei: clear write cb from waiting list on reset
X-Git-Tag: v3.13.5~38
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=badb44c0f55d06f049653c9a38d36cbbc07d0684;p=thirdparty%2Fkernel%2Fstable.git

mei: clear write cb from waiting list on reset

commit 30c54df7cb9b15b222529a028390b9c9582dd65e upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 87c96e4669e2c..74e9e09e1a236 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -941,8 +941,16 @@ 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);
 	}