patch-2.1.100 linux/drivers/misc/parport_share.c

• Lines: 22
• Date: Mon May 4 11:03:09 1998
• Orig file: v2.1.99/linux/drivers/misc/parport_share.c
• Orig date: Sat Apr 25 18:13:11 1998

diff -u --recursive --new-file v2.1.99/linux/drivers/misc/parport_share.c linux/drivers/misc/parport_share.c
@@ -308,7 +308,9 @@
 	}
 
 	/* Now we do the change of devices */
+	spin_lock_irqsave(&port->lock, flags);
 	port->cad = dev;
+	spin_unlock_irqrestore(&port->lock, flags);
 
 	/* Swap the IRQ handlers. */
 	if (port->irq != PARPORT_IRQ_NONE) {
@@ -346,9 +348,8 @@
 			dev->waitprev = port->waittail;
 			if (port->waittail)
 				port->waittail->waitnext = dev;
-			else {
-				port->waithead = dev->port->waittail = dev;
-			}
+			else
+				port->waithead = port->waittail = dev;
 		}
 		spin_unlock_irqrestore (&port->lock, flags);
 	}