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| author | Keith Busch <keith.busch@intel.com> | 2017-03-29 22:48:59 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-03-29 22:54:46 -0500 |
| commit | 89ee9f7680031d7df91a1a27abac69e034c2e892 (patch) | |
| tree | 4e874d870f8fd310aa954153c590f6ae93517868 /drivers/pci/hotplug/pciehp_pci.c | |
| parent | d3881e5015421a578bc328136471fcf1d02ac389 (diff) | |
| download | op-kernel-dev-89ee9f7680031d7df91a1a27abac69e034c2e892.zip op-kernel-dev-89ee9f7680031d7df91a1a27abac69e034c2e892.tar.gz | |
PCI: Add device disconnected state
Add a new state to pci_dev to be set when it is unexpectedly disconnected.
The PCI driver tear down functions can observe this new device state so
they may skip operations that will fail.
The pciehp and pcie-dpc drivers are aware when the link is down, so these
set the flag when their handlers detect the device is disconnected.
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Diffstat (limited to 'drivers/pci/hotplug/pciehp_pci.c')
| -rw-r--r-- | drivers/pci/hotplug/pciehp_pci.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c index 9e69403..19f30a9 100644 --- a/drivers/pci/hotplug/pciehp_pci.c +++ b/drivers/pci/hotplug/pciehp_pci.c @@ -109,6 +109,12 @@ int pciehp_unconfigure_device(struct slot *p_slot) break; } } + if (!presence) { + pci_dev_set_disconnected(dev, NULL); + if (pci_has_subordinate(dev)) + pci_walk_bus(dev->subordinate, + pci_dev_set_disconnected, NULL); + } pci_stop_and_remove_bus_device(dev); /* * Ensure that no new Requests will be generated from |
