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PCI: rockchip-host: Drop error data fabrication when config read fails 

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/50f9a6fa16521a86cb24d2f27c1f66eb3568cb9a.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 19:33:25 +05:30 committed by Bjorn Helgaas
parent 3741f5f4b2
commit ba25d181ca
1 changed files with 1 additions and 3 deletions
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4
drivers/pci/controller/pcie-rockchip-host.c
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@ -221,10 +221,8 @@ static int rockchip_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
{
struct rockchip_pcie *rockchip = bus->sysdata;
if (!rockchip_pcie_valid_device(rockchip, bus, PCI_SLOT(devfn))) {
*val = 0xffffffff;
if (!rockchip_pcie_valid_device(rockchip, bus, PCI_SLOT(devfn)))
return PCIBIOS_DEVICE_NOT_FOUND;
}
if (pci_is_root_bus(bus))
return rockchip_pcie_rd_own_conf(rockchip, where, size, val);