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Commit 138b9dd1 authored by Dave Jones's avatar Dave Jones Committed by Linus Torvalds
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[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: default avatarDave Jones <davej@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 92e52b2e

drivers/isdn/icn/icn.c

+3 −2
Original line number Diff line number Diff line
@@ -1650,7 +1650,7 @@ static void __exit icn_exit(void) 
{

	isdn_ctrl cmd;

	icn_card *card = cards;

	icn_card *last;

	icn_card *last, *tmpcard;

	int i;

	unsigned long flags;
@@ -1670,8 +1670,9 @@ static void __exit icn_exit(void) 
			for (i = 0; i < ICN_BCH; i++)

				icn_free_queue(card, i);

		}

		card = card->next;

		tmpcard = card->next;

		spin_unlock_irqrestore(&card->lock, flags);

		card = tmpcard;

	}

	card = cards;

	cards = NULL;