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net/eth.c: throw BUG for eth_get_dev_by_name(NULL)

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eth_get_dev_by_name() is not safe to use for devname being NULL
as it uses strcmp. This patch makes it fail with a BUG().

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
Acked-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Helmut Raiger 2011-08-22 00:17:17 +00:00 • committed by Wolfgang Denk
parent 24e1664472
commit 7e7f903fcd
1 changed files with 2 additions and 0 deletions
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2
net/eth.c
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@ -108,6 +108,8 @@ struct eth_device *eth_get_dev_by_name(const char *devname)
{
struct eth_device *dev, *target_dev;
BUG_ON(devname == NULL);
if (!eth_devices)
return NULL;