android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

serial: sc16is7xx: remove redundant check in rs485_config

Browse Source 
In uart_set_rs485_config() the serial core already ensures that only one of
both options RTS on send or RTS after send is set.

So remove this check from the drivers rs485_config() function to avoid
redundancy.

Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Link: https://lore.kernel.org/r/20220410104642.32195-5-LinoSanfilippo@gmx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lino Sanfilippo
2022-04-10 12:46:37 +02:00
committed by Greg Kroah-Hartman
parent f633eb294a
commit afea2a93c2
1 changed files with 0 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/tty/serial/sc16is7xx.c
View File

@ -1134,16 +1134,6 @@ static int sc16is7xx_config_rs485(struct uart_port *port,
struct sc16is7xx_one *one = to_sc16is7xx_one(port, port);
if (rs485->flags & SER_RS485_ENABLED) {
bool rts_during_rx, rts_during_tx;
rts_during_rx = rs485->flags & SER_RS485_RTS_AFTER_SEND;
rts_during_tx = rs485->flags & SER_RS485_RTS_ON_SEND;
if (rts_during_rx == rts_during_tx)
dev_err(port->dev,
"unsupported RTS signalling on_send:%d after_send:%d - exactly one of RS485 RTS flags should be set\n",
rts_during_tx, rts_during_rx);
/*
* RTS signal is handled by HW, it's timing can't be influenced.
* However, it's sometimes useful to delay TX even without RTS