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

can: flex_can: Correct the checking for frame length in flexcan_start_xmit()

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: can-flex_can-correct-the-checking-for-frame-length-in-flexcan_start_xmit.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Wed Feb 28 16:23:28 CET 2018

From: Luu An Phu phu.luuan@nxp.com Date: Tue, 2 Jan 2018 10:44:18 +0700 Subject: can: flex_can: Correct the checking for frame length in flexcan_start_xmit()

From: Luu An Phu phu.luuan@nxp.com

[ Upstream commit 13454c14550065fcc1705d6bd4ee6d40e057099f ]

The flexcan_start_xmit() function compares the frame length with data register length to write frame content into data[0] and data[1] register. Data register length is 4 bytes and frame maximum length is 8 bytes.

Fix the check that compares frame length with 3. Because the register length is 4.

Signed-off-by: Luu An Phu phu.luuan@nxp.com Reviewed-by: Oliver Hartkopp socketcan@hartkopp.net Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/can/flexcan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -526,7 +526,7 @@ static int flexcan_start_xmit(struct sk_ data = be32_to_cpup((__be32 *)&cf->data[0]); flexcan_write(data, &priv->tx_mb->data[0]); } - if (cf->can_dlc > 3) { + if (cf->can_dlc > 4) { data = be32_to_cpup((__be32 *)&cf->data[4]); flexcan_write(data, &priv->tx_mb->data[1]); }

Patches currently in stable-queue which might be from phu.luuan@nxp.com are

queue-4.14/can-flex_can-correct-the-checking-for-frame-length-in-flexcan_start_xmit.patch