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vDPA/ifcvf: Fix pci_read_config_byte() return code handling

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[ Upstream commit 7f8825b2a78ac392d3fbb3a2e65e56d9e39d75e9 ]

ifcvf_init_hw() uses pci_read_config_byte() that returns
PCIBIOS_* codes. The error handling, however, assumes the codes are
normal errnos because it checks for < 0.
Convert the error check to plain non-zero check.

Fixes: 5a2414bc45 ("virtio: Intel IFC VF driver for VDPA")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Message-Id: <20241017013812.129952-1-yuancan@huawei.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Zhu Lingshan <lingshan.zhu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yuan Can
2024-10-17 09:38:12 +08:00
committed by Greg Kroah-Hartman
parent afa2294653
commit 32c982b520
1 changed files with 1 additions and 1 deletions
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2
drivers/vdpa/ifcvf/ifcvf_base.c
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@@ -78,7 +78,7 @@ int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *pdev)
u32 i;
ret = pci_read_config_byte(pdev, PCI_CAPABILITY_LIST, &pos);
if (ret < 0) {
if (ret) {
IFCVF_ERR(pdev, "Failed to read PCI capability list\n");
return -EIO;
}