This is a note to let you know that I've just added the patch titled
tty: serial: sh-sci: Fix sleeping in atomic context
to the 6.4-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:
tty-serial-sh-sci-fix-sleeping-in-atomic-context.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 57c984f6fe20ebb9306d6e8c09b4f67fe63298c6 Mon Sep 17 00:00:00 2001
From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Date: Tue, 4 Jul 2023 16:48:18 +0100
Subject: tty: serial: sh-sci: Fix sleeping in atomic context
From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
commit 57c984f6fe20ebb9306d6e8c09b4f67fe63298c6 upstream.
Fix sleeping in atomic context warning as reported by the Smatch static
checker tool by replacing disable_irq->disable_irq_nosync.
Reported by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Fixes: 8749061be196 ("tty: serial: sh-sci: Add RZ/G2L SCIFA DMA tx support")
Cc: stable@xxxxxxxxxx
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230704154818.406913-1-biju.das.jz@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/sh-sci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 7c9457962a3d..8b7a42e05d6d 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -590,7 +590,7 @@ static void sci_start_tx(struct uart_port *port)
dma_submit_error(s->cookie_tx)) {
if (s->cfg->regtype == SCIx_RZ_SCIFA_REGTYPE)
/* Switch irq from SCIF to DMA */
- disable_irq(s->irqs[SCIx_TXI_IRQ]);
+ disable_irq_nosync(s->irqs[SCIx_TXI_IRQ]);
s->cookie_tx = 0;
schedule_work(&s->work_tx);
--
2.41.0
Patches currently in stable-queue which might be from biju.das.jz@xxxxxxxxxxxxxx are
queue-6.4/tty-serial-sh-sci-fix-sleeping-in-atomic-context.patch
