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| author | Myron Stowe <myron.stowe@redhat.com> | 2013-01-31 16:29:25 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-02-01 15:18:19 -0700 |
| commit | 84fb913c43475e0d1e061220ef4622e3e82e91d6 (patch) | |
| tree | 0b39d29400055705017a38e14db85bfe1d1aa823 | |
| parent | d1c3ed669a2d452cacfb48c2d171a1f364dae2ed (diff) | |
| download | linux-84fb913c43475e0d1e061220ef4622e3e82e91d6.tar.gz linux-84fb913c43475e0d1e061220ef4622e3e82e91d6.tar.bz2 linux-84fb913c43475e0d1e061220ef4622e3e82e91d6.zip | |
PCI/ASPM: Deallocate upstream link state even if device is not PCIe
On PCI bus hotplug removal, pcie_aspm_exit_link_state() can potentially
skip parent devices that have link_state allocated. Instead of exiting
early if a given device is not PCIe, check whether or not the device's
parent has link_state allocated. This enables pcie_aspm_exit_link_state()
to properly clean up parent link_state when the last function in a slot
might not be PCIe.
Reported-by: Joe Lawrence <joe.lawrence@stratus.com>
Tested-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index b52630b8eada..ca44115ca1f1 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -634,10 +634,7 @@ void pcie_aspm_exit_link_state(struct pci_dev *pdev) struct pci_dev *parent = pdev->bus->self; struct pcie_link_state *link, *root, *parent_link; - if (!pci_is_pcie(pdev) || !parent || !parent->link_state) - return; - if ((pci_pcie_type(parent) != PCI_EXP_TYPE_ROOT_PORT) && - (pci_pcie_type(parent) != PCI_EXP_TYPE_DOWNSTREAM)) + if (!parent || !parent->link_state) return; down_read(&pci_bus_sem); |