Legacy drivers cannot cope with multiple active devices.

diff --git a/src/drivers/net/legacy.c b/src/drivers/net/legacy.c
index 96b3bcb..a2533b7 100644 (file)
--- a/src/drivers/net/legacy.c
+++ b/src/drivers/net/legacy.c
@@ -18,6 +18,8 @@
 
 struct nic nic;
 
+static int legacy_registered = 0;
+
 static int legacy_transmit ( struct net_device *netdev, struct pk_buff *pkb ) {
        struct nic *nic = netdev->priv;
        struct ethhdr *ethhdr = pkb->data;
@@ -58,6 +60,9 @@ int legacy_probe ( struct pci_device *pci,
                   void ( * disable ) ( struct nic *nic ) ) {
        struct net_device *netdev;
        int rc;
+
+       if ( legacy_registered )
+               return -EBUSY;
        
        netdev = alloc_etherdev ( 0 );
        if ( ! netdev )
@@ -84,6 +89,7 @@ int legacy_probe ( struct pci_device *pci,
        /* Do not remove this message */
        printf ( "WARNING: Using legacy NIC wrapper\n" );
 
+       legacy_registered = 1;
        return 0;
 }
 
@@ -95,6 +101,7 @@ void legacy_remove ( struct pci_device *pci,
        unregister_netdev ( netdev );
        disable ( nic );
        free_netdev ( netdev );
+       legacy_registered = 0;
 }
 
 void pci_fill_nic ( struct nic *nic, struct pci_device *pci ) {