| Message ID | 20240422133219.2710061-2-ria.freelander@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | add support for EXAR XR20M1172 UART | expand |
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 03cf30e20b75..dfcc804f558f 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -1449,7 +1449,7 @@ static int sc16is7xx_setup_mctrl_ports(struct sc16is7xx_port *s, } static const struct serial_rs485 sc16is7xx_rs485_supported = { - .flags = SER_RS485_ENABLED | SER_RS485_RTS_AFTER_SEND, + .flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND, .delay_rts_before_send = 1, .delay_rts_after_send = 1, /* Not supported but keep returning -EINVAL */ };
The hardware supports both RTS_ON_SEND and RTS_AFTER_SEND modes, but after the commit 4afeced55baa ("serial: core: fix sanitizing check for RTS settings") we always end up with SER_RS485_RTS_AFTER_SEND set and always write to the register field SC16IS7XX_EFCR_RTS_INVERT_BIT, which breaks some hardware using these chips. Fixes: 267913ecf737 ("serial: sc16is7xx: Fill in rs485_supported") Signed-off-by: Konstantin Pugin <ria.freelander@gmail.com> --- drivers/tty/serial/sc16is7xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)