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Subject[PATCH 4/5] PCI: use better error return values in aer_inject
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PCI: use better error return values in aer_inject

Replaced some error return values in aer_inject. Use -ENODEV when we
can't find a device and -ENOTTY when the device does not support PCIe AER.

Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
---
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c
index ac0b5e7..da2ad6e 100644
--- a/drivers/pci/pcie/aer/aer_inject.c
+++ b/drivers/pci/pcie/aer/aer_inject.c
@@ -326,23 +326,23 @@ static int aer_inject(struct aer_error_inj *einj)

dev = pci_get_domain_bus_and_slot((int)einj->domain, einj->bus, devfn);
if (!dev)
- return -EINVAL;
+ return -ENODEV;
rpdev = pcie_find_root_port(dev);
if (!rpdev) {
- ret = -EINVAL;
+ ret = -ENOTTY;
goto out_put;
}

pos_cap_err = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
if (!pos_cap_err) {
- ret = -EIO;
+ ret = -ENOTTY;
goto out_put;
}
pci_read_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_SEVER, &sever);

rp_pos_cap_err = pci_find_ext_capability(rpdev, PCI_EXT_CAP_ID_ERR);
if (!rp_pos_cap_err) {
- ret = -EIO;
+ ret = -ENOTTY;
goto out_put;
}



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