diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_dw.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 27 |
1 files changed, 5 insertions, 22 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index d48b50641e9a..06324f17a0cb 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -56,7 +56,6 @@ struct dw8250_data { u8 usr_reg; - int last_mcr; int line; int msr_mask_on; int msr_mask_off; @@ -76,12 +75,6 @@ static inline int dw8250_modify_msr(struct uart_port *p, int offset, int value) { struct dw8250_data *d = p->private_data; - /* If reading MSR, report CTS asserted when auto-CTS/RTS enabled */ - if (offset == UART_MSR && d->last_mcr & UART_MCR_AFE) { - value |= UART_MSR_CTS; - value &= ~UART_MSR_DCTS; - } - /* Override any modem control signals if needed */ if (offset == UART_MSR) { value |= d->msr_mask_on; @@ -101,11 +94,6 @@ static void dw8250_force_idle(struct uart_port *p) static void dw8250_serial_out(struct uart_port *p, int offset, int value) { - struct dw8250_data *d = p->private_data; - - if (offset == UART_MCR) - d->last_mcr = value; - writeb(value, p->membase + (offset << p->regshift)); /* Make sure LCR write wasn't ignored */ @@ -144,11 +132,6 @@ static unsigned int dw8250_serial_inq(struct uart_port *p, int offset) static void dw8250_serial_outq(struct uart_port *p, int offset, int value) { - struct dw8250_data *d = p->private_data; - - if (offset == UART_MCR) - d->last_mcr = value; - value &= 0xff; __raw_writeq(value, p->membase + (offset << p->regshift)); /* Read back to ensure register write ordering. */ @@ -175,11 +158,6 @@ static void dw8250_serial_outq(struct uart_port *p, int offset, int value) static void dw8250_serial_out32(struct uart_port *p, int offset, int value) { - struct dw8250_data *d = p->private_data; - - if (offset == UART_MCR) - d->last_mcr = value; - writel(value, p->membase + (offset << p->regshift)); /* Make sure LCR write wasn't ignored */ @@ -257,6 +235,11 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios, if (!ret) p->uartclk = rate; + + p->status &= ~UPSTAT_AUTOCTS; + if (termios->c_cflag & CRTSCTS) + p->status |= UPSTAT_AUTOCTS; + out: serial8250_do_set_termios(p, termios, old); } |