From 7ba34ff09f1ef105521f914e4ad4e4ac19975bac Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Fri, 8 Jan 2016 01:03:21 -0800
Subject: [PATCH] pci: layerscape: Adjust the return value when
ls_pcie_addr_valid() fails
When trying to access non-existent/unsupported PCI devices in
ls_pcie_read_config(), when ls_pcie_addr_valid() fails it returns
error code and fills in the result with 0xffffffff manually. But it
really should return zero to upper layer codes.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
---
drivers/pci/pcie_layerscape.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c
index 58e88ae45e..99f9c83fa4 100644
--- a/drivers/pci/pcie_layerscape.c
+++ b/drivers/pci/pcie_layerscape.c
@@ -314,7 +314,7 @@ static int ls_pcie_read_config(struct pci_controller *hose, pci_dev_t d,
if (ls_pcie_addr_valid(hose, d)) {
*val = 0xffffffff;
- return -EINVAL;
+ return 0;
}
if (PCI_BUS(d) == hose->first_busno) {
--
2.39.5