The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.14.y git checkout FETCH_HEAD git cherry-pick -x b43a18647f03c87e77d50d6fe74904b61b96323e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023041046-synthetic-urgent-3126@gregkh' --subject-prefix 'PATCH 4.14.y' HEAD^..

Possible dependencies:

b43a18647f03 ("tty: serial: sh-sci: Fix transmit end interrupt handler")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b43a18647f03c87e77d50d6fe74904b61b96323e Mon Sep 17 00:00:00 2001 From: Biju Das biju.das.jz@bp.renesas.com Date: Fri, 17 Mar 2023 15:04:03 +0000 Subject: [PATCH] tty: serial: sh-sci: Fix transmit end interrupt handler

The fourth interrupt on SCI port is transmit end interrupt compared to the break interrupt on other port types. So, shuffle the interrupts to fix the transmit end interrupt handler.

Fixes: e1d0be616186 ("sh-sci: Add h8300 SCI") Cc: stable stable@kernel.org Suggested-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Link: https://lore.kernel.org/r/20230317150403.154094-1-biju.das.jz@bp.renesas.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 7bd080720929..c07663fe80bf 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -31,6 +31,7 @@ #include <linux/ioport.h> #include <linux/ktime.h> #include <linux/major.h> +#include <linux/minmax.h> #include <linux/module.h> #include <linux/mm.h> #include <linux/of.h> @@ -2864,6 +2865,13 @@ static int sci_init_single(struct platform_device *dev, sci_port->irqs[i] = platform_get_irq(dev, i); }

+ /* + * The fourth interrupt on SCI port is transmit end interrupt, so + * shuffle the interrupts. + */ + if (p->type == PORT_SCI) + swap(sci_port->irqs[SCIx_BRI_IRQ], sci_port->irqs[SCIx_TEI_IRQ]); + /* The SCI generates several interrupts. They can be muxed together or * connected to different interrupt lines. In the muxed case only one * interrupt resource is specified as there is only one interrupt ID.