This is a note to let you know that I've just added the patch titled can: sun4i: fix loopback mode to the 4.9-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-sun4i-fix-loopback-mode.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 3a379f5b36ae039dfeb6f73316e47ab1af4945df Mon Sep 17 00:00:00 2001 From: Gerhard Bertelsmann <info@xxxxxxxxxxxxxxxxxxxxxx> Date: Thu, 17 Aug 2017 15:59:49 +0200 Subject: can: sun4i: fix loopback mode From: Gerhard Bertelsmann <info@xxxxxxxxxxxxxxxxxxxxxx> commit 3a379f5b36ae039dfeb6f73316e47ab1af4945df upstream. Fix loopback mode by setting the right flag and remove presume mode. Signed-off-by: Gerhard Bertelsmann <info@xxxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/can/sun4i_can.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/net/can/sun4i_can.c +++ b/drivers/net/can/sun4i_can.c @@ -342,7 +342,7 @@ static int sun4i_can_start(struct net_de /* enter the selected mode */ mod_reg_val = readl(priv->base + SUN4I_REG_MSEL_ADDR); - if (priv->can.ctrlmode & CAN_CTRLMODE_PRESUME_ACK) + if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) mod_reg_val |= SUN4I_MSEL_LOOPBACK_MODE; else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) mod_reg_val |= SUN4I_MSEL_LISTEN_ONLY_MODE; @@ -811,7 +811,6 @@ static int sun4ican_probe(struct platfor priv->can.ctrlmode_supported = CAN_CTRLMODE_BERR_REPORTING | CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_LOOPBACK | - CAN_CTRLMODE_PRESUME_ACK | CAN_CTRLMODE_3_SAMPLES; priv->base = addr; priv->clk = clk; Patches currently in stable-queue which might be from info@xxxxxxxxxxxxxxxxxxxxxx are queue-4.9/can-sun4i-fix-loopback-mode.patch