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 6.1-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-progr.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 962b105acb73b3ce9cb650eba446b1bafcc679ae
Author: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Date: Thu Dec 29 16:50:17 2022 +0100
tty: serial: qcom-geni-serial: stop operations in progress at shutdown
[ Upstream commit d8aca2f96813d51df574a811eda9a2cbed00f261 ]
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>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 7905935b9f1b4..fd72644605e05 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -891,6 +891,8 @@ static int setup_fifos(struct qcom_geni_serial_port *port)
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)
