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Subject[PATCH 30/79] riscom8: split open and close methods up
Date
From: Alan Cox <alan@linux.intel.com>

Moving towards a tty_port method for open/close

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/char/riscom8.c | 47 ++++++++++++++++++++++++++---------------------
1 files changed, 26 insertions(+), 21 deletions(-)
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 171711a..9499991 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -921,20 +921,12 @@ static void rc_flush_buffer(struct tty_struct *tty)
tty_wakeup(tty);
}

-static void rc_close(struct tty_struct *tty, struct file *filp)
+static void rc_close_port(struct tty_struct *tty, struct tty_port *port)
{
- struct riscom_port *port = tty->driver_data;
- struct riscom_board *bp;
unsigned long flags;
+ struct riscom_port *rp = container_of(port, struct riscom_port, port);
+ struct riscom_board *bp = port_Board(rp);
unsigned long timeout;
-
- if (!port || rc_paranoia_check(port, tty->name, "close"))
- return;
-
- bp = port_Board(port);
-
- if (tty_port_close_start(&port->port, tty, filp) == 0)
- return;

/*
* At this point we stop accepting input. To do this, we
@@ -944,29 +936,42 @@ static void rc_close(struct tty_struct *tty, struct file *filp)
*/

spin_lock_irqsave(&riscom_lock, flags);
- port->IER &= ~IER_RXD;
- if (port->port.flags & ASYNC_INITIALIZED) {
- port->IER &= ~IER_TXRDY;
- port->IER |= IER_TXEMPTY;
- rc_out(bp, CD180_CAR, port_No(port));
- rc_out(bp, CD180_IER, port->IER);
+ rp->IER &= ~IER_RXD;
+ if (port->flags & ASYNC_INITIALIZED) {
+ rp->IER &= ~IER_TXRDY;
+ rp->IER |= IER_TXEMPTY;
+ rc_out(bp, CD180_CAR, port_No(rp));
+ rc_out(bp, CD180_IER, rp->IER);
/*
* Before we drop DTR, make sure the UART transmitter
* has completely drained; this is especially
* important if there is a transmit FIFO!
*/
timeout = jiffies + HZ;
- while (port->IER & IER_TXEMPTY) {
+ while (rp->IER & IER_TXEMPTY) {
spin_unlock_irqrestore(&riscom_lock, flags);
- msleep_interruptible(jiffies_to_msecs(port->timeout));
+ msleep_interruptible(jiffies_to_msecs(rp->timeout));
spin_lock_irqsave(&riscom_lock, flags);
if (time_after(jiffies, timeout))
break;
}
}
- rc_shutdown_port(tty, bp, port);
- rc_flush_buffer(tty);
+ rc_shutdown_port(tty, bp, rp);
spin_unlock_irqrestore(&riscom_lock, flags);
+}
+
+static void rc_close(struct tty_struct *tty, struct file *filp)
+{
+ struct riscom_port *port = tty->driver_data;
+
+ if (!port || rc_paranoia_check(port, tty->name, "close"))
+ return;
+
+ if (tty_port_close_start(&port->port, tty, filp) == 0)
+ return;
+
+ rc_close_port(tty, &port->port);
+ rc_flush_buffer(tty);

tty_port_close_end(&port->port, tty);
}
--
1.6.4.2


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