mei: fix memory leak of mei_clients array
we never freed the mei_clients array on driver shutdown
only on reset
add mei_hbm_reset function that wraps the hbm cleanup
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index b9a4bb5..8041062 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -60,6 +60,34 @@
}
/**
+ * mei_hbm_idle - set hbm to idle state
+ *
+ * @dev: the device structure
+ */
+void mei_hbm_idle(struct mei_device *dev)
+{
+ dev->init_clients_timer = 0;
+ dev->hbm_state = MEI_HBM_IDLE;
+}
+
+/**
+ * mei_hbm_reset - reset hbm counters and book keeping data structurs
+ *
+ * @dev: the device structure
+ */
+void mei_hbm_reset(struct mei_device *dev)
+{
+ dev->me_clients_num = 0;
+ dev->me_client_presentation_num = 0;
+ dev->me_client_index = 0;
+
+ kfree(dev->me_clients);
+ dev->me_clients = NULL;
+
+ mei_hbm_idle(dev);
+}
+
+/**
* mei_hbm_me_cl_allocate - allocates storage for me clients
*
* @dev: the device structure
@@ -71,9 +99,7 @@
struct mei_me_client *clients;
int b;
- dev->me_clients_num = 0;
- dev->me_client_presentation_num = 0;
- dev->me_client_index = 0;
+ mei_hbm_reset(dev);
/* count how many ME clients we have */
for_each_set_bit(b, dev->me_clients_map, MEI_CLIENTS_MAX)
@@ -82,9 +108,6 @@
if (dev->me_clients_num == 0)
return 0;
- kfree(dev->me_clients);
- dev->me_clients = NULL;
-
dev_dbg(&dev->pdev->dev, "memory allocation for ME clients size=%ld.\n",
dev->me_clients_num * sizeof(struct mei_me_client));
/* allocate storage for ME clients representation */
@@ -135,17 +158,6 @@
}
-/**
- * mei_hbm_idle - set hbm to idle state
- *
- * @dev: the device structure
- */
-void mei_hbm_idle(struct mei_device *dev)
-{
- dev->init_clients_timer = 0;
- dev->hbm_state = MEI_HBM_IDLE;
-}
-
int mei_hbm_start_wait(struct mei_device *dev)
{
int ret;