[char-misc] mei: reset flow control on the last client disconnection

[Tomas Winkler]

From: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>

The FW resets the flow control for single buffer clients when the last
host client disconnects, also the driver has to follow this policy and
zero the flow control counter in such case.

Cc: <stable@xxxxxxxxxxxxxxx> #4.1
Signed-off-by: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
---
 drivers/misc/mei/client.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index ae0160e02b34..6decbe136ea7 100644
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -755,6 +755,9 @@ void mei_cl_set_disconnected(struct mei_cl *cl)
 	if (!WARN_ON(cl->me_cl->connect_count == 0))
 		cl->me_cl->connect_count--;
 
+	if (cl->me_cl->connect_count == 0)
+		cl->me_cl->mei_flow_ctrl_creds = 0;
+
 	mei_me_cl_put(cl->me_cl);
 	cl->me_cl = NULL;
 }
-- 
2.4.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/