From: satya priya Date: Thu, 10 Sep 2020 12:53:58 +0000 (+0530) Subject: tty: serial: qcom_geni_serial: Fix the UART wakeup issue X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a4ced376fed0f90e5da56aad1612fc37ed5cfdac;p=linux.git 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 Reviewed-by: Akash Asthana Reviewed-by: Bjorn Andersson Link: https://lore.kernel.org/r/1599742438-16811-5-git-send-email-skakit@codeaurora.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index e390ffc8bbbd2..8da2eb2d10902 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); }