Subject: [PATCH 2/4] serial: xuartps: Do not handle overrun errors under IGNPAR option

From: [email-masked] (Peter Hurley)
Date: Mon, 17 Aug 2015 11:49:43 -0400

On 08/17/2015 03:22 AM, Michal Simek wrote:
> From: Anirudha Sarangi <[email-masked]>
> 
> The existing implementation includes overrun errors under IGNPAR
> option. This patch fixes it by including only parity and framing
> error under IGNPAR option.

The convention adopted by Linux serial drivers is to ignore overrun
errors if both IGNPAR and IGNBRK are set.

Regards,
Peter Hurley

> Signed-off-by: Anirudha Sarangi <[email-masked]>
> Signed-off-by: Michal Simek <[email-masked]>
> ---
> 
>  drivers/tty/serial/xilinx_uartps.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
> index a3020344ac9d..c4437e8929ff 100644
> --- a/drivers/tty/serial/xilinx_uartps.c
> +++ b/drivers/tty/serial/xilinx_uartps.c
> @@ -691,7 +691,7 @@ static void cdns_uart_set_termios(struct uart_port *port,
>  
>  	if (termios->c_iflag & IGNPAR)
>  		port->ignore_status_mask |= CDNS_UART_IXR_PARITY |
> -			CDNS_UART_IXR_FRAMING | CDNS_UART_IXR_OVERRUN;
> +					    CDNS_UART_IXR_FRAMING;
>  
>  	/* ignore all characters if CREAD is not set */
>  	if ((termios->c_cflag & CREAD) == 0)
>