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net: chelsio: cxgb3: check the return value of pci_find_capability()

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[ Upstream commit 767b9825ed ]

The function pci_find_capability() in t3_prep_adapter() can fail, so its
return value should be checked.

Fixes: 4d22de3e6c ("Add support for the latest 1G/10G Chelsio adapter, T3")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jia-Ju Bai 2022-02-25 04:37:27 -08:00 • committed by Greg Kroah-Hartman
commit e6bc597fbc
1 changed files with 2 additions and 0 deletions
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drivers/net/ethernet/chelsio/cxgb3/t3_hw.c
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@ -3678,6 +3678,8 @@ int t3_prep_adapter(struct adapter *adapter, const struct adapter_info *ai,
MAC_STATS_ACCUM_SECS : (MAC_STATS_ACCUM_SECS * 10);
adapter->params.pci.vpd_cap_addr =
pci_find_capability(adapter->pdev, PCI_CAP_ID_VPD);
if (!adapter->params.pci.vpd_cap_addr)
return -ENODEV;
ret = get_vpd_params(adapter, &adapter->params.vpd);
if (ret < 0)
return ret;