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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-06-24 16:59:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-25 09:09:53 -0700 |
| commit | fc2af3348a4acea0c28db89a8c84660d0baed4aa (patch) | |
| tree | adcb1ec97949d060df4d0874b88c99a61a8f55c6 /drivers/tty/serial/sh-sci.c | |
| parent | 2768cf42874ae04bdbc33a9c9db96181dc0bbb8d (diff) | |
| download | op-kernel-dev-fc2af3348a4acea0c28db89a8c84660d0baed4aa.zip op-kernel-dev-fc2af3348a4acea0c28db89a8c84660d0baed4aa.tar.gz | |
serial: sh-sci: Clear (H)SCIF timeout and overrun during reset
Add the missing timeout bit definition for (H)SCIF.
Clear the timeout and overrun flag bits during UART reset, cfr. the
initialization flowchart in the datasheet.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 408f706..432d9ac 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -2156,6 +2156,11 @@ static void sci_reset(struct uart_port *port) sci_clear_SCxSR(port, SCxSR_RDxF_CLEAR(port) & SCxSR_ERROR_CLEAR(port) & SCxSR_BREAK_CLEAR(port)); + if (sci_getreg(port, SCLSR)->size) { + status = serial_port_in(port, SCLSR); + status &= ~(SCLSR_TO | SCLSR_ORER); + serial_port_out(port, SCLSR, status); + } } static void sci_set_termios(struct uart_port *port, struct ktermios *termios, |
