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serial: MPSC: Stop rx engine when CREAD cleared

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Currently, the MPSC driver doesn't stop recieving characters when the CREAD
flag in termios->c_cflag is cleared.  It should.  Also, only start receiving
if its not already started.

Signed-off-by: Stephane Chazelas <stephane@artesyncp.com>
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Stephane Chazelas 2007-07-31 00:38:59 -07:00 committed by Linus Torvalds
parent 6c1ead5e77
commit 5797ae364c
1 changed files with 8 additions and 5 deletions
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13
drivers/serial/mpsc.c
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@ -1520,7 +1520,6 @@ mpsc_set_termios(struct uart_port *port, struct ktermios *termios,
mpsc_set_baudrate(pi, baud);
/* Characters/events to read */
pi->rcv_data = 1;
pi->port.read_status_mask = SDMA_DESC_CMDSTAT_OR;
if (termios->c_iflag & INPCK)
@ -1544,11 +1543,15 @@ mpsc_set_termios(struct uart_port *port, struct ktermios *termios,
pi->port.ignore_status_mask |= SDMA_DESC_CMDSTAT_OR;
}
/* Ignore all chars if CREAD not set */
if (!(termios->c_cflag & CREAD))
if ((termios->c_cflag & CREAD)) {
if (!pi->rcv_data) {
pi->rcv_data = 1;
mpsc_start_rx(pi);
}
} else if (pi->rcv_data) {
mpsc_stop_rx(port);
pi->rcv_data = 0;
else
mpsc_start_rx(pi);
}
spin_unlock_irqrestore(&pi->port.lock, flags);
return;