An MMIO read from a PCI device that doesn't exist or doesn't respond
causes a PCI error.  There's no real data to return to satisfy the
CPU read, so most hardware fabricates ~0 data.

Use SET_PCI_ERROR_RESPONSE() to set the error response, when a faulty
read occurs.

This helps unify PCI error response checking and make error check
consistent and easier to find.

Compile tested only.

Signed-off-by: Naveen Naidu <redacted>
---
 drivers/pci/controller/pci-aardvark.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index 596ebcfcc82d..dc2f820ef55f 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c

@@ -894,7 +894,7 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
 	int ret;
 
 	if (!advk_pcie_valid_device(pcie, bus, devfn)) {
-		*val = 0xffffffff;
+		SET_PCI_ERROR_RESPONSE(val);

 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}
 

@@ -920,7 +920,7 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
 			*val = CFG_RD_CRS_VAL;
 			return PCIBIOS_SUCCESSFUL;
 		}
-		*val = 0xffffffff;
+		SET_PCI_ERROR_RESPONSE(val);
 		return PCIBIOS_SET_FAILED;
 	}
 

@@ -955,14 +955,14 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
 			*val = CFG_RD_CRS_VAL;
 			return PCIBIOS_SUCCESSFUL;
 		}
-		*val = 0xffffffff;
+		SET_PCI_ERROR_RESPONSE(val);
 		return PCIBIOS_SET_FAILED;
 	}
 
 	/* Check PIO status and get the read result */
 	ret = advk_pcie_check_pio_status(pcie, allow_crs, val);
 	if (ret < 0) {
-		*val = 0xffffffff;
+		SET_PCI_ERROR_RESPONSE(val);
 		return PCIBIOS_SET_FAILED;
 	}
 

-- 
2.25.1