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PCI hotplug: shpchp: Removed check for hotplug of display devices 

Removed check to prevent hotplug of display devices within shpchp.
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>
This commit is contained in:
Praveen Kalamegham 2010-05-20 12:15:01 -05:00 committed by Jesse Barnes
parent 01b666df48
commit 0ba10bc752
1 changed files with 4 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/pci/hotplug/shpchp_pci.c
View File

@ -60,12 +60,6 @@ int __ref shpchp_configure_device(struct slot *p_slot)
dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 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)) {
/* Find an unused bus number for the new bridge */
@ -114,17 +108,11 @@ int shpchp_unconfigure_device(struct slot *p_slot)
ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:%02x\n",
__func__, pci_domain_nr(parent), p_slot->bus, p_slot->device);
for (j=0; j<8 ; j++) {
struct pci_dev* temp = pci_get_slot(parent,
for (j = 0; j < 8 ; j++) {
struct pci_dev *temp = pci_get_slot(parent,
(p_slot->device << 3) | 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) {
pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
if (bctl & PCI_BRIDGE_CTL_VGA) {
@ -132,7 +120,8 @@ int shpchp_unconfigure_device(struct slot *p_slot)
"Cannot remove display device %s\n",
pci_name(temp));
pci_dev_put(temp);
continue;
rc = -EINVAL;
break;
}
}
pci_remove_bus_device(temp);