| Message ID | 1375362389-26096-6-git-send-email-wangyijing@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
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; }
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@huawei.com> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Oliver Neukum <oneukum@suse.de> Cc: Gu Zheng <guz.fnst@cn.fujitsu.com> Cc: linux-pci@vger.kernel.org --- drivers/pci/probe.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)