[PATCH] e1000: ring buffers resources cleanup

[Vasily Averin]

Memory leak was found in 2.6.18-rc4 and e1000 7.2.7 from sourceforge:
We should free resources allocated for previous rings if following allocation 
fails.

Signed-off-by: Vasily Averin <[EMAIL PROTECTED]>

Thank you,
        Vasily Averin
SWsoft Virtuozzo/OpenVZ Linux kernel team


--- linux-2.6.18-rc4/drivers/net/e1000/e1000_main.c.irsrs       2006-08-18 
16:58:51.000000000 +0400
+++ linux-2.6.18-rc4/drivers/net/e1000/e1000_main.c     2006-08-18 
18:53:05.000000000 +0400
@@ -1398,6 +1398,9 @@ e1000_setup_all_tx_resources(struct e100
                if (err) {
                        DPRINTK(PROBE, ERR,
                                "Allocation for Tx Queue %u failed\n", i);
+                       for (i-- ; i >= 0; i--)
+                               e1000_free_tx_resources(adapter,
+                                                       &adapter->tx_ring[i]);
                        break;
                }
        }
@@ -1656,6 +1659,9 @@ e1000_setup_all_rx_resources(struct e100
                if (err) {
                        DPRINTK(PROBE, ERR,
                                "Allocation for Rx Queue %u failed\n", i);
+                       for (i-- ; i >= 0; i--)
+                               e1000_free_rx_resources(adapter,
+                                                       &adapter->rx_ring[i]);
                        break;
                }
        }