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PCMCIA: fix sa1111 oops on remove 

The sa1111 socket driver oopses when removed:

Unable to handle kernel NULL pointer dereference at virtual address 000003b0
pgd = c1b40000
[000003b0] *pgd=00000000
Internal error: Oops: 41b43005 [#1]
Modules linked in:
CPU: 0    Not tainted  (3.3.0-rc1+ #744)
PC is at pcmcia_remove+0x3c/0x60
LR is at pcmcia_remove+0x34/0x60

This is because we try to dereference a NULL 's' to obtain the next
pointer.  Fix this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2012-01-24 21:33:26 +00:00
parent b3945bcbc3
commit 171cf94ccb
1 changed files with 2 additions and 1 deletions
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3
drivers/pcmcia/sa1111_generic.c
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@ -205,7 +205,8 @@ static int __devexit pcmcia_remove(struct sa1111_dev *dev)
dev_set_drvdata(&dev->dev, NULL);
for (; next = s->next, s; s = next) {
for (; s; s = next) {
next = s->next;
soc_pcmcia_remove_one(&s->soc);
kfree(s);
}