This is a note to let you know that I've just added the patch titled
tty: serial: qcom-geni-serial: stop operations in progress at shutdown
to the 5.10-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-qcom-geni-serial-stop-operations-in-progress-at-shutdown.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d8aca2f96813d51df574a811eda9a2cbed00f261 Mon Sep 17 00:00:00 2001
From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Date: Thu, 29 Dec 2022 16:50:17 +0100
Subject: tty: serial: qcom-geni-serial: stop operations in progress at shutdown
From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
commit d8aca2f96813d51df574a811eda9a2cbed00f261 upstream.
We don't stop transmissions in progress at shutdown. This is fine with
FIFO SE mode but with DMA (support for which we'll introduce later) it
causes trouble so fix it now.
Fixes: e83766334f96 ("tty: serial: qcom_geni_serial: No need to stop tx/rx on UART shutdown")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221229155030.418800-2-brgl@xxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/qcom_geni_serial.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -893,6 +893,8 @@ static int setup_fifos(struct qcom_geni_
static void qcom_geni_serial_shutdown(struct uart_port *uport)
{
disable_irq(uport->irq);
+ qcom_geni_serial_stop_tx(uport);
+ qcom_geni_serial_stop_rx(uport);
}
static int qcom_geni_serial_port_setup(struct uart_port *uport)
Patches currently in stable-queue which might be from bartosz.golaszewski@xxxxxxxxxx are
queue-5.10/tty-serial-qcom-geni-serial-stop-operations-in-progress-at-shutdown.patch
