[PARPORT] 2.2.17pre3 parport_share SMP locking

From: Andrea Arcangeli (andrea@suse.de)
Date: Sat Jun 17 2000 - 11:47:14 EDT

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    These ones doesn't seems to be necessary:

    @@ -336,14 +371,17 @@
             struct parport *port = dev->port;
             unsigned long flags;
     
    + read_lock_irqsave (&port->cad_lock, flags);
             if (port->cad == dev) {
    + read_unlock_irqrestore (&port->cad_lock, flags);
                     printk(KERN_INFO "%s: %s already owner\n",
                                dev->port->name,dev->name);
                     return 0;
             }
    + read_unlock_irqrestore (&port->cad_lock, flags);

    Andrea

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