From: Sujith Pandel <sujithpshankar@xxxxxxxxx>
[ Upstream commit 6c51c82c60991bdbfb937f3bf0cdbe68d042073d ]
The function find_smbios_instance_string() does not consider the
PCI domain number. As a result, SMBIOS type 41 device type instance
would be exported to sysfs for all the PCI domains which have a
PCI device with same bus/device/function, though PCI bus/device/func
from a specific PCI domain has SMBIOS type 41 device type instance
defined.
Address the issue by making find_smbios_instance_string() check PCI domain
number as well.
Reported-by: Shai Fultheim <Shai@xxxxxxxxxxx>
Suggested-by: Shai Fultheim <Shai@xxxxxxxxxxx>
Tested-by: Shai Fultheim <Shai@xxxxxxxxxxx>
Signed-off-by: Sujith Pandel <sujithpshankar@xxxxxxxxx>
Signed-off-by: Narendra K <Narendra_K@xxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
drivers/pci/pci-label.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/pci-label.c b/drivers/pci/pci-label.c
index 024b5c179348..5986aad76088 100644
--- a/drivers/pci/pci-label.c
+++ b/drivers/pci/pci-label.c
@@ -43,9 +43,11 @@ static size_t find_smbios_instance_string(struct pci_dev *pdev, char *buf,
{
const struct dmi_device *dmi;
struct dmi_dev_onboard *donboard;
+ int domain_nr;
int bus;
int devfn;
+ domain_nr = pci_domain_nr(pdev->bus);
bus = pdev->bus->number;
devfn = pdev->devfn;
@@ -53,8 +55,9 @@ static size_t find_smbios_instance_string(struct pci_dev *pdev, char *buf,
while ((dmi = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD,
NULL, dmi)) != NULL) {
donboard = dmi->device_data;
- if (donboard && donboard->bus == bus &&
- donboard->devfn == devfn) {
+ if (donboard && donboard->segment == domain_nr &&
+ donboard->bus == bus &&
+ donboard->devfn == devfn) {
if (buf) {
if (attribute == SMBIOS_ATTR_INSTANCE_SHOW)
return scnprintf(buf, PAGE_SIZE,
--
2.15.1