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ucc_geth: fix module removal

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- uccf should be set to NULL to not double-free memory on
  subsequent calls;
- ind_hash_q and group_hash_q lists should be initialized in the
  probe() function, instead of struct_init() (called by open()),
  otherwise there will be an oops if ucc_geth_driver removed
  prior 'ifconfig ethX up';
- add unregister_netdev();
- reorder geth_remove() steps.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Anton Vorontsov 2008-02-01 16:22:48 +03:00 committed by David S. Miller
parent f67c627518
commit 80a9fad8e8
1 changed files with 10 additions and 7 deletions
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17
drivers/net/ucc_geth.c
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@ -2084,8 +2084,10 @@ static void ucc_geth_memclean(struct ucc_geth_private *ugeth)
if (!ugeth)
return;
if (ugeth->uccf)
if (ugeth->uccf) {
ucc_fast_free(ugeth->uccf);
ugeth->uccf = NULL;
}
if (ugeth->p_thread_data_tx) {
qe_muram_free(ugeth->thread_dat_tx_offset);
@ -2305,10 +2307,6 @@ static int ucc_struct_init(struct ucc_geth_private *ugeth)
ug_info = ugeth->ug_info;
uf_info = &ug_info->uf_info;
/* Create CQs for hash tables */
INIT_LIST_HEAD(&ugeth->group_hash_q);
INIT_LIST_HEAD(&ugeth->ind_hash_q);
if (!((uf_info->bd_mem_part == MEM_PART_SYSTEM) ||
(uf_info->bd_mem_part == MEM_PART_MURAM))) {
if (netif_msg_probe(ugeth))
@ -3990,6 +3988,10 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma
ugeth = netdev_priv(dev);
spin_lock_init(&ugeth->lock);
/* Create CQs for hash tables */
INIT_LIST_HEAD(&ugeth->group_hash_q);
INIT_LIST_HEAD(&ugeth->ind_hash_q);
dev_set_drvdata(device, dev);
/* Set the dev->base_addr to the gfar reg region */
@ -4040,9 +4042,10 @@ static int ucc_geth_remove(struct of_device* ofdev)
struct net_device *dev = dev_get_drvdata(device);
struct ucc_geth_private *ugeth = netdev_priv(dev);
dev_set_drvdata(device, NULL);
ucc_geth_memclean(ugeth);
unregister_netdev(dev);
free_netdev(dev);
ucc_geth_memclean(ugeth);
dev_set_drvdata(device, NULL);
return 0;
}