From b43a18647f03c87e77d50d6fe74904b61b96323e Mon Sep 17 00:00:00 2001 From: Biju Das 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 Suggested-by: Geert Uytterhoeven Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20230317150403.154094-1-biju.das.jz@bp.renesas.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/sh-sci.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 7bd0807..c07663f 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -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. -- 2.7.4