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PCI: histb: Drop error data fabrication when config read fails

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If config pci_ops.read() methods return failure, the PCI_OP_READ() and
PCI_USER_READ_CONFIG() wrappers use PCI_SET_ERROR_RESPONSE() to set the
data value, so there's no need to set it in the pci_ops.read() methods
themselves.

Drop the unnecessary data value fabrication when pci_ops.read() fails.

Link: https://lore.kernel.org/r/7da7ea760abc5f85cad6e9b0d3e59eebd93f50d3.1637243717.git.naveennaidu479@gmail.com
Signed-off-by: Naveen Naidu <naveennaidu479@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Naveen Naidu 2021-11-18 19:33:19 +05:30 committed by Bjorn Helgaas
parent 8ed2196a0a
commit f4a44c1e25
1 changed files with 1 additions and 3 deletions
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4
drivers/pci/controller/dwc/pcie-histb.c
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@ -127,10 +127,8 @@ static int histb_pcie_rd_own_conf(struct pci_bus *bus, unsigned int devfn,
{
struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata);
if (PCI_SLOT(devfn)) {
*val = ~0;
if (PCI_SLOT(devfn))
return PCIBIOS_DEVICE_NOT_FOUND;
}
*val = dw_pcie_read_dbi(pci, where, size);
return PCIBIOS_SUCCESSFUL;