diff options
| author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2014-11-06 11:23:00 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-07 02:00:44 +0300 |
| commit | bd737f8738b7e15930aa7b47c94c28a8d83148ac (patch) | |
| tree | 9140a208d4856074a92ffc6543aabcf08a38a762 /drivers/tty/serial/omap-serial.c | |
| parent | a9c20a9cf3190a517b88d8e08d93157256f97673 (diff) | |
| download | linux-bd737f8738b7e15930aa7b47c94c28a8d83148ac.tar.xz | |
tty/serial_core: Introduce lock mechanism for RS485
Introduce an homogeneous lock system between setting and using the rs485
data of the uart_port.
This patch should not be split into multiple ones in order to avoid
leaving the tree in an unstable state.
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Suggested-by: Alan Cox <alan@linux.intel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/omap-serial.c')
| -rw-r--r-- | drivers/tty/serial/omap-serial.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 050d1b5c7b36..e0bec06a5f60 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -1360,12 +1360,10 @@ static int serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf) { struct uart_omap_port *up = to_uart_omap_port(port); - unsigned long flags; unsigned int mode; int val; pm_runtime_get_sync(up->dev); - spin_lock_irqsave(&up->port.lock, flags); /* Disable interrupts from this port */ mode = up->ier; @@ -1401,7 +1399,6 @@ serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf) serial_out(up, UART_OMAP_SCR, up->scr); } - spin_unlock_irqrestore(&up->port.lock, flags); pm_runtime_mark_last_busy(up->dev); pm_runtime_put_autosuspend(up->dev); |