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serial: 8250_dwlib: Remove serial_rs485 sanitization 

Serial core handles serial_rs485 sanitization and rs485 struct
assignment. As serial_rs485 is already clear for the non-RS485 case by
serial core, there no need to clear flags in the driver.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-26-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-06-06 13:04:22 +03:00 committed by Greg Kroah-Hartman
parent 51ad36baac
commit 9cdaf4fc2e
1 changed files with 0 additions and 10 deletions
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10
drivers/tty/serial/8250/8250_dwlib.c
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@ -93,9 +93,6 @@ static int dw8250_rs485_config(struct uart_port *p, struct serial_rs485 *rs485)
tcr &= ~DW_UART_TCR_XFER_MODE;
if (rs485->flags & SER_RS485_ENABLED) {
/* Clear unsupported flags. */
rs485->flags &= SER_RS485_ENABLED | SER_RS485_RX_DURING_TX |
SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND;
tcr |= DW_UART_TCR_RS485_EN;
if (rs485->flags & SER_RS485_RX_DURING_TX) {
@ -111,8 +108,6 @@ static int dw8250_rs485_config(struct uart_port *p, struct serial_rs485 *rs485)
dw8250_writel_ext(p, DW_UART_DE_EN, 1);
dw8250_writel_ext(p, DW_UART_RE_EN, 1);
} else {
rs485->flags = 0;
tcr &= ~DW_UART_TCR_RS485_EN;
}
@ -127,11 +122,6 @@ static int dw8250_rs485_config(struct uart_port *p, struct serial_rs485 *rs485)
dw8250_writel_ext(p, DW_UART_TCR, tcr);
rs485->delay_rts_before_send = 0;
rs485->delay_rts_after_send = 0;
p->rs485 = *rs485;
return 0;
}