On Thu, Aug 09, 2018 at 10:33:56AM -0600, Keith Busch wrote: > --- a/drivers/pci/pci-sysfs.c > +++ b/drivers/pci/pci-sysfs.c > @@ -591,6 +591,7 @@ static ssize_t sriov_numvfs_store(struct device *dev, > if (num_vfs > pci_sriov_get_totalvfs(pdev)) > return -ERANGE; > > + pci_lock_rescan_remove(); > device_lock(&pdev->dev); Doesn't this obviate the need to hold the device_lock()? What could otherwise run concurrently that doesn't hold pci_lock_rescan_remove() and would cause a race condition? Thanks, Lukas
