remove dead Radeon URL

[linux-2.6-omap-h63xx.git] / drivers / char / hvc_console.c

diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index cddb789902db3c8766cdc3c604ced656f31cf09b..f65b2e14a48561adccb082815e1cadfced89a042 100644 (file)
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -335,6 +335,8 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
        } /* else count == 0 */
 
        tty->driver_data = hp;
+       tty->low_latency = 1; /* Makes flushes to ldisc synchronous. */
+
        hp->tty = tty;
        /* Save for request_irq outside of spin_lock. */
        irq = hp->irq;
@@ -597,9 +599,7 @@ static int hvc_poll(struct hvc_struct *hp)
 
        /* Read data if any */
        for (;;) {
-               int count = N_INBUF;
-               if (count > (TTY_FLIPBUF_SIZE - tty->flip.count))
-                       count = TTY_FLIPBUF_SIZE - tty->flip.count;
+               int count = tty_buffer_request_room(tty, N_INBUF);
 
                /* If flip is full, just reschedule a later read */
                if (count == 0) {
@@ -635,9 +635,6 @@ static int hvc_poll(struct hvc_struct *hp)
                        tty_insert_flip_char(tty, buf[i], 0);
                }
 
-               if (tty->flip.count)
-                       tty_schedule_flip(tty);
-
                /*
                 * Account for the total amount read in one loop, and if above
                 * 64 bytes, we do a quick schedule loop to let the tty grok
@@ -658,6 +655,9 @@ static int hvc_poll(struct hvc_struct *hp)
  bail:
        spin_unlock_irqrestore(&hp->lock, flags);
 
+       if (read_total)
+               tty_flip_buffer_push(tty);
+       
        return poll_mask;
 }
 
@@ -839,9 +839,6 @@ int __init hvc_init(void)
        hvc_driver->flags = TTY_DRIVER_REAL_RAW;
        tty_set_operations(hvc_driver, &hvc_ops);
 
-       if (tty_register_driver(hvc_driver))
-               panic("Couldn't register hvc console driver\n");
-
        /* Always start the kthread because there can be hotplug vty adapters
         * added later. */
        hvc_task = kthread_run(khvcd, NULL, "khvcd");
@@ -851,6 +848,9 @@ int __init hvc_init(void)
                return -EIO;
        }
 
+       if (tty_register_driver(hvc_driver))
+               panic("Couldn't register hvc console driver\n");
+
        return 0;
 }
 module_init(hvc_init);