diff options
| author | Alexander Shiyan <shc_work@mail.ru> | 2013-01-21 19:38:56 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-21 13:56:46 -0800 |
| commit | f548b96de684c86c72cd7ba019c03a7afe94fd53 (patch) | |
| tree | 3e00af206200172b911ccc8c7b8294230b52a0ad /drivers/tty/serial/sccnxp.c | |
| parent | c098020d0368ded1c6ba8d7b612feffe067509a6 (diff) | |
| download | talos-obmc-linux-f548b96de684c86c72cd7ba019c03a7afe94fd53.tar.gz talos-obmc-linux-f548b96de684c86c72cd7ba019c03a7afe94fd53.zip | |
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 <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/sccnxp.c')
| -rw-r--r-- | drivers/tty/serial/sccnxp.c | 7 |
1 files changed, 6 insertions, 1 deletions
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) |
