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UPSTREAM: tty: serial: qcom-geni-serial: stop operations in progress at shutdown

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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: e83766334f ("tty: serial: qcom_geni_serial: No need to stop tx/rx on UART shutdown")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20221229155030.418800-2-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 370629635
Change-Id: I8ca4171bf25b530e7fc4bb91fad93358d753b746
(cherry picked from commit d8aca2f968)
Signed-off-by: Praveen Talari <quic_ptalari@quicinc.com>
This commit is contained in:
Bartosz Golaszewski
2022-12-29 16:50:17 +01:00
committed by John Stultz
parent 481220c5b9
commit d75a50763e
1 changed files with 2 additions and 0 deletions
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2
drivers/tty/serial/qcom_geni_serial.c
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@@ -892,6 +892,8 @@ static int setup_fifos(struct qcom_geni_serial_port *port)
static void qcom_geni_serial_shutdown(struct uart_port *uport) static void qcom_geni_serial_shutdown(struct uart_port *uport)
{ {
disable_irq(uport->irq); 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) static int qcom_geni_serial_port_setup(struct uart_port *uport)