[PATCH 4/4] pci: export untrusted attribute in sysfs

[Rajat Jain]

This is needed to allow the userspace to determine when an untrusted
device has been added, and thus allowing it to bind the driver manually
to it, if it so wishes. This is being done as part of the approach
discussed at https://lkml.org/lkml/2020/6/9/1331

Signed-off-by: Rajat Jain <rajatja@xxxxxxxxxx>
---
 drivers/pci/pci-sysfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 6d78df981d41a..574e9c613ba26 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -50,6 +50,7 @@ pci_config_attr(subsystem_device, "0x%04x\n");
 pci_config_attr(revision, "0x%02x\n");
 pci_config_attr(class, "0x%06x\n");
 pci_config_attr(irq, "%u\n");
+pci_config_attr(untrusted, "%u\n");
 
 static ssize_t broken_parity_status_show(struct device *dev,
 					 struct device_attribute *attr,
@@ -608,6 +609,7 @@ static struct attribute *pci_dev_attrs[] = {
 #endif
 	&dev_attr_driver_override.attr,
 	&dev_attr_ari_enabled.attr,
+	&dev_attr_untrusted.attr,
 	NULL,
 };
 
-- 
2.27.0.290.gba653c62da-goog