tty: Pull the dtr raise into tty port

This moves another per device special out of what should be shared open
wait paths into private methods

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 15 insertions, 6 deletions

diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index fb2e6b5e0ef1..ac9f21e18c3f 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -3298,6 +3298,18 @@ static int carrier_raised(struct tty_port *port)
         return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
 }
 
+static void raise_dtr_rts(struct tty_port *port)
+{
+        struct mgsl_struct *info = container_of(port, struct mgsl_struct, port);
+        unsigned long flags;
+
+        spin_lock_irqsave(&info->irq_spinlock,flags);
+        info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+        usc_set_serial_signals(info);
+        spin_unlock_irqrestore(&info->irq_spinlock,flags);
+}
+
+
 /* block_til_ready()
  * 
  *      Block the current process until the specified port
@@ -3358,12 +3370,8 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
         port->blocked_open++;
         
         while (1) {
-                if (tty->termios->c_cflag & CBAUD) {
-                        spin_lock_irqsave(&info->irq_spinlock,flags);
-                        info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
-                        usc_set_serial_signals(info);
-                        spin_unlock_irqrestore(&info->irq_spinlock,flags);
-                }
+                if (tty->termios->c_cflag & CBAUD)
+                        tty_port_raise_dtr_rts(port);
                 
                 set_current_state(TASK_INTERRUPTIBLE);
                 
@@ -4321,6 +4329,7 @@ static void mgsl_add_device( struct mgsl_struct *info )
 
 static const struct tty_port_operations mgsl_port_ops = {
         .carrier_raised = carrier_raised,
+        .raise_dtr_rts = raise_dtr_rts,
 };