This is a note to let you know that I've just added the patch titled
can: c_can: end pending transmission on network stop (ifdown)
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
can-c_can-end-pending-transmission-on-network-stop-ifdown.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7ffd7b4e169d619e66928fe5d997723f2c6f1056 Mon Sep 17 00:00:00 2001
From: Viktor Babrian <babrian.viktor@xxxxxxxxxxxx>
Date: Sun, 18 Jan 2015 20:01:40 +0100
Subject: can: c_can: end pending transmission on network stop (ifdown)
From: Viktor Babrian <babrian.viktor@xxxxxxxxxxxx>
commit 7ffd7b4e169d619e66928fe5d997723f2c6f1056 upstream.
Put controller into init mode in network stop to end pending transmissions. The
issue is observed in cases when transmitted frame is not acked.
Signed-off-by: Viktor Babrian <babrian.viktor@xxxxxxxxxxxx>
Cc: linux-stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/can/c_can/c_can.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -611,6 +611,10 @@ static void c_can_stop(struct net_device
struct c_can_priv *priv = netdev_priv(dev);
c_can_irq_control(priv, false);
+
+ /* put ctrl to init on stop to end ongoing transmission */
+ priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_INIT);
+
priv->can.state = CAN_STATE_STOPPED;
}
Patches currently in stable-queue which might be from babrian.viktor@xxxxxxxxxxxx are
queue-3.18/can-c_can-end-pending-transmission-on-network-stop-ifdown.patch
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