PCI: hotplug: pciehp: Removed check for hotplug of display devices
Removed check to prevent hotplug of display devices within pciehp.
Originally this was thought to have been required within the PCI
Hotplug specification for some legacy devices. However there is
no such requirement in the most recent revision. The check prevents
hotplug of not only display devices but also computational GPUs
which require serviceability.
Signed-off-by: Praveen Kalamegham <praveen@nextio.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c
index 0a16444..2fce726 100644
--- a/drivers/pci/hotplug/pciehp_pci.c
+++ b/drivers/pci/hotplug/pciehp_pci.c
@@ -84,12 +84,6 @@
dev = pci_get_slot(parent, PCI_DEVFN(0, fn));
if (!dev)
continue;
- if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
- ctrl_err(ctrl, "Cannot hot-add display device %s\n",
- pci_name(dev));
- pci_dev_put(dev);
- continue;
- }
if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
pciehp_add_bridge(dev);
@@ -133,15 +127,9 @@
presence = 0;
for (j = 0; j < 8; j++) {
- struct pci_dev* temp = pci_get_slot(parent, PCI_DEVFN(0, j));
+ struct pci_dev *temp = pci_get_slot(parent, PCI_DEVFN(0, j));
if (!temp)
continue;
- if ((temp->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
- ctrl_err(ctrl, "Cannot remove display device %s\n",
- pci_name(temp));
- pci_dev_put(temp);
- continue;
- }
if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) {
pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
if (bctl & PCI_BRIDGE_CTL_VGA) {
@@ -149,7 +137,8 @@
"Cannot remove display device %s\n",
pci_name(temp));
pci_dev_put(temp);
- continue;
+ rc = EINVAL;
+ break;
}
}
pci_remove_bus_device(temp);