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serial: MPSC: Stop rx engine when CREAD cleared
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>
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parent
6c1ead5e77
commit
5797ae364c
1 changed files with 8 additions and 5 deletions
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@ -1520,7 +1520,6 @@ mpsc_set_termios(struct uart_port *port, struct ktermios *termios,
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mpsc_set_baudrate(pi, baud);
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/* Characters/events to read */
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pi->rcv_data = 1;
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pi->port.read_status_mask = SDMA_DESC_CMDSTAT_OR;
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if (termios->c_iflag & INPCK)
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@ -1544,11 +1543,15 @@ mpsc_set_termios(struct uart_port *port, struct ktermios *termios,
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pi->port.ignore_status_mask |= SDMA_DESC_CMDSTAT_OR;
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}
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/* Ignore all chars if CREAD not set */
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if (!(termios->c_cflag & CREAD))
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if ((termios->c_cflag & CREAD)) {
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if (!pi->rcv_data) {
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pi->rcv_data = 1;
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mpsc_start_rx(pi);
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}
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} else if (pi->rcv_data) {
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mpsc_stop_rx(port);
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pi->rcv_data = 0;
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else
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mpsc_start_rx(pi);
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}
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spin_unlock_irqrestore(&pi->port.lock, flags);
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return;
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