1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index 56612a2dca6b..017f755632a3 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -311,7 +311,8 @@ static void hvsi_recv_control(struct hvsi_struct *hp, uint8_t *packet,
                                 /* CD went away; no more connection */
                                 pr_debug("hvsi%i: CD dropped\n", hp->index);
                                 hp->mctrl &= TIOCM_CD;
-                                if (!(hp->tty->flags & CLOCAL))
+                                /* If userland hasn't done an open(2) yet, hp->tty is NULL. */
+                                if (hp->tty && !(hp->tty->flags & CLOCAL))
                                         *to_hangup = hp->tty;
                         }
                         break;
@@ -986,10 +987,7 @@ static void hvsi_write_worker(void *arg)
                 start_j = 0;
 #endif /* DEBUG */
                 wake_up_all(&hp->emptyq);
-                if (test_bit(TTY_DO_WRITE_WAKEUP, &hp->tty->flags)
-                                && hp->tty->ldisc.write_wakeup)
-                        hp->tty->ldisc.write_wakeup(hp->tty);
-                wake_up_interruptible(&hp->tty->write_wait);
+                tty_wakeup(hp->tty);
         }
 
 out:
@@ -1299,7 +1297,7 @@ static int __init hvsi_console_init(void)
                 hp->inbuf_end = hp->inbuf;
                 hp->state = HVSI_CLOSED;
                 hp->vtermno = *vtermno;
-                hp->virq = irq_create_mapping(NULL, irq[0], 0);
+                hp->virq = irq_create_mapping(NULL, irq[0]);
                 if (hp->virq == NO_IRQ) {
                         printk(KERN_ERR "%s: couldn't create irq mapping for 0x%x\n",
                                 __FUNCTION__, irq[0]);