From f548b96de684c86c72cd7ba019c03a7afe94fd53 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Mon, 21 Jan 2013 19:38:56 +0400 Subject: [PATCH] serial: sccnxp: Reset break and overrun bits in RX handler This patch adds a hardware reset the break and overflow bits for these events. Without resetting the bits they will be reported to the core every time, when once occur. Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/sccnxp.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c index c5f0e964ec05..c7dec1678f65 100644 --- a/drivers/tty/serial/sccnxp.c +++ b/drivers/tty/serial/sccnxp.c @@ -305,14 +305,19 @@ static void sccnxp_handle_rx(struct uart_port *port) if (unlikely(sr)) { if (sr & SR_BRK) { port->icount.brk++; + sccnxp_port_write(port, SCCNXP_CR_REG, + CR_CMD_BREAK_RESET); if (uart_handle_break(port)) continue; } else if (sr & SR_PE) port->icount.parity++; else if (sr & SR_FE) port->icount.frame++; - else if (sr & SR_OVR) + else if (sr & SR_OVR) { port->icount.overrun++; + sccnxp_port_write(port, SCCNXP_CR_REG, + CR_CMD_STATUS_RESET); + } sr &= port->read_status_mask; if (sr & SR_BRK)