aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorSathya Narayanan <sathyan@teamf1.com>2008-07-01 04:58:05 -0400
committerJeff Garzik <jgarzik@redhat.com>2008-07-04 08:17:18 -0400
commitab9b30cc3ec868fab8764d710193107fbeedbd0f (patch)
treef596086e32685b9c1f885b3e8edddf4b72d3b406 /drivers
parent773212337941c5e26a05989532943877d72a2c83 (diff)
ibm_newemac: Fixes kernel crashes when speed of cable connected changes
The descriptor pointers were not initialized to NIL values, so it was poiniting to some random addresses which was completely invalid. This fix takes care of initializing the descriptor to NIL values and clearing the valid descriptors on clean ring operation. Signed-off-by: Sathya Narayanan <sathyan@teamf1.com> Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ibm_newemac/core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index 5d2108c5ac7..ca63fa000ee 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -2719,6 +2719,8 @@ static int __devinit emac_probe(struct of_device *ofdev,
2719 /* Clean rings */ 2719 /* Clean rings */
2720 memset(dev->tx_desc, 0, NUM_TX_BUFF * sizeof(struct mal_descriptor)); 2720 memset(dev->tx_desc, 0, NUM_TX_BUFF * sizeof(struct mal_descriptor));
2721 memset(dev->rx_desc, 0, NUM_RX_BUFF * sizeof(struct mal_descriptor)); 2721 memset(dev->rx_desc, 0, NUM_RX_BUFF * sizeof(struct mal_descriptor));
2722 memset(dev->tx_skb, 0, NUM_TX_BUFF * sizeof(struct sk_buff *));
2723 memset(dev->rx_skb, 0, NUM_RX_BUFF * sizeof(struct sk_buff *));
2722 2724
2723 /* Attach to ZMII, if needed */ 2725 /* Attach to ZMII, if needed */
2724 if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII) && 2726 if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII) &&