patch "mei: reset flow control on the last client disconnection" added to char-misc-next

patch "mei: reset flow control on the last client disconnection" added to char-misc-next

[gregkh]

This is a note to let you know that I've just added the patch titled

    mei: reset flow control on the last client disconnection

to my char-misc git tree which can be found at
    git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-next branch.

The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)

The patch will also be merged in the next major kernel release
during the merge window.

If you have any questions about this process, please let me know.


>From c241e9b1d9ee7292d708d2298bc87f1455aad0c7 Mon Sep 17 00:00:00 2001
From: Alexander Usyskin <alexander.usyskin@intel.com>
Date: Sat, 13 Jun 2015 21:18:40 +0300
Subject: mei: reset flow control on the last client disconnection

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@vger.kernel.org> #4.1
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>
---
 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 7a5a6636f0fd..d089b136f12c 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;
 }
-- 
2.4.4


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