diff options
| author | Julien Malik <julien.malik@unseenlabs.fr> | 2023-06-24 23:03:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-16 20:14:42 +0200 |
| commit | 1ed59c5e17936c8f3a0fb7b4217af0b73298d2d7 (patch) | |
| tree | b2522e80d9c78fd7c46a8779d7e4d39801aa075e /drivers/tty/serial | |
| parent | cee8e0cc9308ab55d4c3bd8eae5f6b4b65898e59 (diff) | |
serial: xilinx_uartps: unset STOPBRK when setting STARTBRK
Zynq UG585 states, in chapter B.33, for XUARTPS_CR_STARTBRK:
It can only be set if STPBRK (Stop transmitter break) is not high
This fixes tcsendbreak, which otherwise does not actually break.
Signed-Off-By: Julien Malik <julien.malik@unseenlabs.fr>
Link: https://lore.kernel.org/r/20230624210323.88455-1-julien.malik@unseenlabs.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/xilinx_uartps.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 9c13dac1d4d1..66a45a634158 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -657,7 +657,7 @@ static void cdns_uart_break_ctl(struct uart_port *port, int ctl) status = readl(port->membase + CDNS_UART_CR); if (ctl == -1) - writel(CDNS_UART_CR_STARTBRK | status, + writel(CDNS_UART_CR_STARTBRK | (~CDNS_UART_CR_STOPBRK & status), port->membase + CDNS_UART_CR); else { if ((status & CDNS_UART_CR_STOPBRK) == 0) |