PCI: Align PCIe capability and PCI accessor return values
The PCI config accessors (pci_read_config_word(), et al) return
PCIBIOS_SUCCESSFUL (zero) or positive error values like
PCIBIOS_FUNC_NOT_SUPPORTED.
The PCIe capability accessors similarly return PCIBIOS errors, but in
addition, they can return -EINVAL. This makes it harder than it should be
to check for errors.
Return PCIBIOS_BAD_REGISTER_NUMBER instead of -EINVAL in all PCIe
capability accessors.
Suggested-by: Bjorn Helgaas <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bolarinwa Olayemi Saheed <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
1 file changed
