Commit 09cedbef authored by Yinghai Lu's avatar Yinghai Lu Committed by Jesse Barnes

PCI: Fix /sys warning when sriov enabled and card is hot removed

sysfs is a bit stricter now and emits warnings in more cases.

For SRIOV hotplug, we are calling pci_stop_dev() for each VF first
(after we update pci_stop_bus_devices) which remove each VF subdir.  So
double check the VF dir in /sys before trying to remove the physfn link.
Signed-of-by: default avatarYinghai Lu <yinghai@kernel.org>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent ad71c962
......@@ -173,7 +173,13 @@ static void virtfn_remove(struct pci_dev *dev, int id, int reset)
sprintf(buf, "virtfn%u", id);
sysfs_remove_link(&dev->dev.kobj, buf);
sysfs_remove_link(&virtfn->dev.kobj, "physfn");
/*
* pci_stop_dev() could have been called for this virtfn already,
* so the directory for the virtfn may have been removed before.
* Double check to avoid spurious sysfs warnings.
*/
if (virtfn->dev.kobj.sd)
sysfs_remove_link(&virtfn->dev.kobj, "physfn");
mutex_lock(&iov->dev->sriov->lock);
pci_remove_bus_device(virtfn);
......
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