s390/qeth: avoid null pointer dereference on OSN

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[ Upstream commit 25e2c341e7 ]

Access card->dev only after checking whether's its valid.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Julian Wiedmann 2017-05-10 19:07:53 +02:00 • committed by Greg Kroah-Hartman

parent b68c2e387a

commit 96a81eb6ad

1 changed files with 6 additions and 4 deletions

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drivers/s390/net/qeth_l2_main.c

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