1 files changed, 10 insertions, 15 deletions

diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index a0370ed752c..a89a95fb5e4 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:
@@ -1154,7 +1152,6 @@ static int __init hvsi_init(void)
 		return -ENOMEM;
 
 	hvsi_driver->owner = THIS_MODULE;
-	hvsi_driver->devfs_name = "hvsi/";
 	hvsi_driver->driver_name = "hvsi";
 	hvsi_driver->name = "hvsi";
 	hvsi_driver->major = HVSI_MAJOR;
@@ -1169,7 +1166,7 @@ static int __init hvsi_init(void)
 		struct hvsi_struct *hp = &hvsi_ports[i];
 		int ret = 1;
 
-		ret = request_irq(hp->virq, hvsi_interrupt, SA_INTERRUPT, "hvsi", hp);
+		ret = request_irq(hp->virq, hvsi_interrupt, IRQF_DISABLED, "hvsi", hp);
 		if (ret)
 			printk(KERN_ERR "HVSI: couldn't reserve irq 0x%x (error %i)\n",
 				hp->virq, ret);
@@ -1277,11 +1274,10 @@ static int __init hvsi_console_init(void)
 			vty != NULL;
 			vty = of_find_compatible_node(vty, "serial", "hvterm-protocol")) {
 		struct hvsi_struct *hp;
-		uint32_t *vtermno;
-		uint32_t *irq;
+		const uint32_t *vtermno, *irq;
 
-		vtermno = (uint32_t *)get_property(vty, "reg", NULL);
-		irq = (uint32_t *)get_property(vty, "interrupts", NULL);
+		vtermno = get_property(vty, "reg", NULL);
+		irq = get_property(vty, "interrupts", NULL);
 		if (!vtermno || !irq)
 			continue;
 
@@ -1300,13 +1296,12 @@ static int __init hvsi_console_init(void)
 		hp->inbuf_end = hp->inbuf;
 		hp->state = HVSI_CLOSED;
 		hp->vtermno = *vtermno;
-		hp->virq = virt_irq_create_mapping(irq[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__, hp->virq);
+				__FUNCTION__, irq[0]);
 			continue;
-		} else
-			hp->virq = irq_offset_up(hp->virq);
+		}
 
 		hvsi_count++;
 	}