diff options
| author | satya priya <skakit@codeaurora.org> | 2020-09-10 15:53:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-16 15:26:12 +0300 |
| commit | a4ced376fed0f90e5da56aad1612fc37ed5cfdac (patch) | |
| tree | 92f12452cc43dac9ebaabcd907c840c946e1760c /drivers/tty/serial/qcom_geni_serial.c | |
| parent | 2ec812a04ff4ef8d4cba4005b7526691333a2973 (diff) | |
| download | linux-a4ced376fed0f90e5da56aad1612fc37ed5cfdac.tar.xz | |
tty: serial: qcom_geni_serial: Fix the UART wakeup issue
As a part of system suspend uart_port_suspend is called from the
Serial driver, which calls set_mctrl passing mctrl as 0. This
makes RFR high(NOT_READY) during suspend.
Due to this BT SoC is not able to send wakeup bytes to UART during
suspend. Include if check for non-suspend case to keep RFR low
during suspend.
Signed-off-by: satya priya <skakit@codeaurora.org>
Reviewed-by: Akash Asthana <akashast@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1599742438-16811-5-git-send-email-skakit@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/qcom_geni_serial.c')
| -rw-r--r-- | drivers/tty/serial/qcom_geni_serial.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index e390ffc8bbbd..8da2eb2d1090 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -242,7 +242,7 @@ static void qcom_geni_serial_set_mctrl(struct uart_port *uport, if (mctrl & TIOCM_LOOP) port->loopback = RX_TX_CTS_RTS_SORTED; - if (!(mctrl & TIOCM_RTS)) + if (!(mctrl & TIOCM_RTS) && !uport->suspended) uart_manual_rfr = UART_MANUAL_RFR_EN | UART_RFR_NOT_READY; writel(uart_manual_rfr, uport->membase + SE_UART_MANUAL_RFR); } |