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authorDave Jones <davej@redhat.com>2005-08-08 19:13:15 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-08-08 19:21:32 -0400
commit138b9dd1fd7b44176af4f3b672060c790b0eaf55 (patch)
treeaba0bffcaaee3fd29c1e3142a4c10331b4858293 /drivers/isdn
parent92e52b2e82bec10a70744d4a2b04e0ff2dfe2c98 (diff)
[PATCH] icn driver fails to unload when no hardware present
Fix a null dereference in module unload path. Found by a simple modprobe icn ; rmmod icn Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/isdn')
-rw-r--r--drivers/isdn/icn/icn.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c
index e0d1b01cc74c..386df71eee74 100644
--- a/drivers/isdn/icn/icn.c
+++ b/drivers/isdn/icn/icn.c
@@ -1650,7 +1650,7 @@ static void __exit icn_exit(void)
1650{ 1650{
1651 isdn_ctrl cmd; 1651 isdn_ctrl cmd;
1652 icn_card *card = cards; 1652 icn_card *card = cards;
1653 icn_card *last; 1653 icn_card *last, *tmpcard;
1654 int i; 1654 int i;
1655 unsigned long flags; 1655 unsigned long flags;
1656 1656
@@ -1670,8 +1670,9 @@ static void __exit icn_exit(void)
1670 for (i = 0; i < ICN_BCH; i++) 1670 for (i = 0; i < ICN_BCH; i++)
1671 icn_free_queue(card, i); 1671 icn_free_queue(card, i);
1672 } 1672 }
1673 card = card->next; 1673 tmpcard = card->next;
1674 spin_unlock_irqrestore(&card->lock, flags); 1674 spin_unlock_irqrestore(&card->lock, flags);
1675 card = tmpcard;
1675 } 1676 }
1676 card = cards; 1677 card = cards;
1677 cards = NULL; 1678 cards = NULL;