Add inspection of device change in pci_scan_single_device.
If device change found, print warning. Because the new device
bind the old device driver, so for safety, we do not remove this
device.
Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
Cc: Paul Bolle <pebolle@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Oliver Neukum <oneukum@xxxxxxx>
Cc: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
---
drivers/pci/probe.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index edb138c..3ac65aa 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1389,6 +1389,8 @@ struct pci_dev *__ref pci_scan_single_device(struct pci_bus *bus, int devfn)
dev = pci_get_slot(bus, devfn);
if (dev) {
+ if (pci_serial_number_changed(dev))
+ dev_warn(&dev->dev, "device serial number changed!");
pci_dev_put(dev);
return dev;
}
--
1.7.1
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