diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2011-03-30 00:10:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-19 16:32:20 -0700 |
| commit | 303a7a1199c20f7c9452f024a6e17bf348b6b398 (patch) | |
| tree | f3db2311d9156981f4d3d99aaf65b1ef646f887b /drivers/tty/serial | |
| parent | c7d7abff40c27f82fe78b1091ab3fad69b2546f9 (diff) | |
| download | blackbird-op-linux-303a7a1199c20f7c9452f024a6e17bf348b6b398.tar.gz blackbird-op-linux-303a7a1199c20f7c9452f024a6e17bf348b6b398.zip | |
serial: core, do not set DTR/RTS twice on startup
In .dtr_rts we do:
uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS)
and call uart_update_termios. It does:
uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS)
once again. As the only callsite of uart_update_termios is .dtr_rts,
remove the uart_set_mctrl from uart_update_termios to not set it twice.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 47657cf4f8b9..3aae8ed2a8f5 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1483,20 +1483,6 @@ static void uart_hangup(struct tty_struct *tty) static void uart_update_termios(struct tty_struct *tty, struct uart_state *state) { - struct uart_port *port = state->uart_port; - - /* - * If the device failed to grab its irq resources, - * or some other error occurred, don't try to talk - * to the port hardware. - */ - if (!(tty->flags & (1 << TTY_IO_ERROR))) { - /* - * And finally enable the RTS and DTR signals. - */ - if (tty->termios->c_cflag & CBAUD) - uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS); - } } static int uart_carrier_raised(struct tty_port *port) |
