qlcnic: fix unchecked return value
authorPan Bian <bianpan2016@163.com>
Sun, 23 Apr 2017 12:04:04 +0000 (20:04 +0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 24 Apr 2017 20:10:53 +0000 (16:10 -0400)
commit91ec701a553cb3de470fd471c6fefe3ad1125455
tree542d0fcd16478312c482e5a629fdf0210d44077d
parent2a39e7aa8a98f777f0732ca7125b6c9668791760
qlcnic: fix unchecked return value

Function pci_find_ext_capability() may return 0, which is an invalid
address. In function qlcnic_sriov_virtid_fn(), its return value is used
without validation. This may result in invalid memory access bugs. This
patch fixes the bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c