EDAC/amd64: Convert PCIBIOS_* return codes to errnos

gpu_get_node_map() uses pci_read_config_dword() that returns PCIBIOS_*
codes. The return code is then returned all the way into the module
init function amd64_edac_init() that returns it as is. The module init
functions, however, should return normal errnos.

Convert PCIBIOS_* returns code using pcibios_err_to_errno() into normal
errno before returning it from gpu_get_node_map().

For consistency, convert also the other similar cases which return
PCIBIOS_* codes even if they do not have any bugs at the moment.

Fixes: 4251566ebc1c ("EDAC/amd64: Cache and use GPU node map")
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240527132236.13875-1-ilpo.jarvinen@linux.intel.com

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 1f3520d7686135ad2e2ba6f38b289fff9810fe08..a17f3c0cdfa601676ac8498293d60645d63b9655 100644 (file)
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -81,7 +81,7 @@ int __amd64_read_pci_cfg_dword(struct pci_dev *pdev, int offset,
                amd64_warn("%s: error reading F%dx%03x.\n",
                           func, PCI_FUNC(pdev->devfn), offset);
 
-       return err;
+       return pcibios_err_to_errno(err);
 }
 
 int __amd64_write_pci_cfg_dword(struct pci_dev *pdev, int offset,
@@ -94,7 +94,7 @@ int __amd64_write_pci_cfg_dword(struct pci_dev *pdev, int offset,
                amd64_warn("%s: error writing to F%dx%03x.\n",
                           func, PCI_FUNC(pdev->devfn), offset);
 
-       return err;
+       return pcibios_err_to_errno(err);
 }
 
 /*
@@ -1025,8 +1025,10 @@ static int gpu_get_node_map(struct amd64_pvt *pvt)
        }
 
        ret = pci_read_config_dword(pdev, REG_LOCAL_NODE_TYPE_MAP, &tmp);
-       if (ret)
+       if (ret) {
+               ret = pcibios_err_to_errno(ret);
                goto out;
+       }
 
        gpu_node_map.node_count = FIELD_GET(LNTM_NODE_COUNT, tmp);
        gpu_node_map.base_node_id = FIELD_GET(LNTM_BASE_NODE_ID, tmp);