patch-2.4.0-prerelease linux/net/atm/resources.c

• Lines: 37
• Date: Fri Dec 29 14:35:47 2000
• Orig file: v2.4.0-test12/linux/net/atm/resources.c
• Orig date: Tue Mar 21 23:38:26 2000

diff -u --recursive --new-file v2.4.0-test12/linux/net/atm/resources.c linux/net/atm/resources.c
@@ -25,6 +25,7 @@
 struct atm_dev *atm_devs = NULL;
 static struct atm_dev *last_dev = NULL;
 struct atm_vcc *nodev_vccs = NULL;
+extern spinlock_t atm_dev_lock;
 
 
 static struct atm_dev *alloc_atm_dev(const char *type)
@@ -48,11 +49,15 @@
 
 static void free_atm_dev(struct atm_dev *dev)
 {
+	spin_lock (&atm_dev_lock);
+	
 	if (dev->prev) dev->prev->next = dev->next;
 	else atm_devs = dev->next;
 	if (dev->next) dev->next->prev = dev->prev;
 	else last_dev = dev->prev;
 	kfree(dev);
+	
+	spin_unlock (&atm_dev_lock);
 }
 
 
@@ -100,10 +105,12 @@
 		if (atm_proc_dev_register(dev) < 0) {
 			printk(KERN_ERR "atm_dev_register: "
 			    "atm_proc_dev_register failed for dev %s\n",type);
+			spin_unlock (&atm_dev_lock);		
 			free_atm_dev(dev);
 			return NULL;
 		}
 #endif
+	spin_unlock (&atm_dev_lock);		
 	return dev;
 }