diff mbox series

[13/22] PCI: rockchip: Use SET_PCI_ERROR_RESPONSE() when device not found

Message ID 11cbd327beeed70c6db69aad4eeafe28ade4ecb3.1633972263.git.naveennaidu479@gmail.com (mailing list archive)
State Superseded
Delegated to: Bjorn Helgaas
Headers show
Series PCI: Unify PCI error response checking | expand

Commit Message

Naveen Naidu Oct. 11, 2021, 6:02 p.m. UTC 
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 <naveennaidu479@gmail.com>
---
 drivers/pci/controller/pcie-rockchip-host.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index c52316d0bfd2..f5d718700d59 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -222,7 +222,7 @@  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;
+		SET_PCI_ERROR_RESPONSE(val);
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}