Include PCI_ERROR_RESPONSE along with 0xffffffff in the comment to
specify a hardware error. This makes MMIO read errors easier to find.
Signed-off-by: Naveen Naidu <naveennaidu479@xxxxxxxxx>
---
drivers/pci/controller/pci-xgene.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
index 56d0d50338c8..89ea81ffb532 100644
--- a/drivers/pci/controller/pci-xgene.c
+++ b/drivers/pci/controller/pci-xgene.c
@@ -175,10 +175,10 @@ static int xgene_pcie_config_read32(struct pci_bus *bus, unsigned int devfn,
* Retry Status (CRS) logic: when CRS Software Visibility is
* enabled and we read the Vendor and Device ID of a non-existent
* device, the controller fabricates return data of 0xFFFF0001
- * ("device exists but is not ready") instead of 0xFFFFFFFF
- * ("device does not exist"). This causes the PCI core to retry
- * the read until it times out. Avoid this by not claiming to
- * support CRS SV.
+ * ("device exists but is not ready") instead of
+ * 0xFFFFFFFF (PCI_ERROR_RESPONSE) ("device does not exist"). This causes
+ * the PCI core to retry the read until it times out.
+ * Avoid this by not claiming to support CRS SV.
*/
if (pci_is_root_bus(bus) && (port->version == XGENE_PCIE_IP_VER_1) &&
((where & ~0x3) == XGENE_V1_PCI_EXP_CAP + PCI_EXP_RTCTL))
--
2.25.1
